While I agree with your conclusion due to Logic and ProTools' dominance (and the price point of the former) I don't think those percentages hold for the musician/engineer crowd. It's true there are far more "regular" PCs in the world than Macs, but among musicians Macs are more common than PCs. Additionally, people with Macs arguably have more money to spend on hardware and software than the average PC user.

Guys this is a money loser from day 1.  If they port to Mac, they have to increase their development staff to fix bugs on Mac, as well as PC.  Either that, or double their work load.  And all this because more musicians use Mac?  Apple probably sells logic for break even or even at a loss due to their other profits from other areas of the company.  Garage Band is a gateway drug to logic, and at $200 a lot more appealing than $700 for PT.  So Sonar goes into a brand new market where they have no foothold competing against two DAW's that combined make up about 90% of the Apple DAW market.
 
Studio One for as successful as it's been out of the gate, holds 5% of the Mac DAW market, and they've been around since 2009 trying to make a dent.  But they have done damage in the PC market, mainly off their strong hardware sales offering free S1 Artist versions.
 
It's far better for Sonar to try and grab a bigger share of the PC market than waste money trying to make a Mac version work, where it may or may not succeed, and perhaps alienate their core customer base, who are 100% Windows.

Linux though is crying out for a DAW that doesn't look like it's written for MS DOS.

Sanderxpander
Logic is incredible value. I'm happy with PC/Sonar but I really think there is no contest value-wise when you're already on Mac. For new buyers, that is.

EDIT: by the way, Logic used to be on PC. It wasn't until Apple took over from EMagic that it stopped PC support. I'm not betting on them ever reversing that.

No they're not going to port it back to PC.  The main reason for the buy was to create garage band, Logic just turned out to be a surprise gem for them, but at the price they sell it, as I said, I'm pretty sure they lose money on it or break even.  They don't care, they're apple, it's all about selling you into the walled garden.

denverdrummer
and at $200 a lot more appealing than $700 for PT.  So Sonar goes into a brand new market where they have no foothold competing against two DAW's that combined make up about 90% of the Apple DAW market.
 

 
I see over at Avid that the new Pro Tools 12 is now $899 for the standard non-HD version. I don't think Avid are doing themselves any favours with such a pricing scheme. They must be thinking if they can't compete with LogicProX on pricing, they might as well make people pay big time. There would obviously have to be a very specific reason for people to go with Pro tools, and so Avid are clearly taking advantage of that. What a ruthless world we live in. 
 
PS: Avid have now jumped on the subscription bandwagon, with same formula as Sonar. 

Avid is the worst company in the world.  When they were delisted from the stock market, I'd hoped that someone would buy out PT from them.  They waited out the storm, and are now relisted on NASDAQ, although their stock has gone down ever since they were relisted, and if PT12 doesn't take off, they will be in trouble.
 
At some point the rubber will meet the road.  PT is still the mainstay in big studios, the only problem being the big studios are going out of business left and right.  The budgets from record companies on new albums are drastically reduced.  This is why everything new coming out sounds so processed and stale, it's the same country clubbers running the show, and there's no room for creativity.  PT just doesn't have the lock it once did on the market, and with reduced budgets for new records, it's only going to push more cost effective alternatives.
 
Sonar has had very solid and loyal customers.  I really hope that with the Gibson/TASCAM relationship, that will push those numbers upward.  I think there are too many DAWS on the market, and that at some point some of the outliers will either have to change or fold.  I mean seriously is there a reason Tracktion still exists?  They are less than 1% of the market.

But 1% might represent $30,000 a year for 3 people working part time at home. Software is cool because no you really don't need to put it in a box or physical store. The more units Sonar sells on line the higher the profit. Those boxes and DVD's must cost at least $10 or more each. 
On line delivery is the push.
 
The new control center is part of solidifying the overall on line model of delivery. I'm seeing that it is already causing a lot of extra support time to make it work. But they will have it all running smoothly in a short while I would think. 
The Control Center is basically the same idea as Steinbergs E Licencer app. Steinberg gives you the option of the soft version or the hardware USB version. I hope Sonar does the same someday. I really don't like this internet dependency for my studio daw which I would rather not have to connect. The option for a USB licencer gets my vote. I said option, not mandatory as I know their are many who hate dongles. 

the moment that sonar for mac is announced, I'm looking for something else. it's probably the only thing that could make me switch to another daw actually.

As much as I'd personally love to have access to a Mac version of Sonar, for totally selfish reasons, Cakewalk has every reason NOT to port Sonar. 
 
Digital Performer finally being ported to Windows after so many years gives us a pretty good indication of the state of the market on Mac. 
 
Apple sells hardware, so they can afford to provide affordable and even free software. Hard to compete with that - and that's not taking into account the level of integration allowed by the fact that the same manufacturer provides the hardware, the OS AND the software. 
 
 
 

And Apple have just released the Logic Pro X 10.1 update three days ago, a significant update by the looks of it; many things have been added including a new drum-machine (looking very much like NI Battery 4) plus 6 new analog modeled compressors, also all new presets and 8 voice unison to the Retro Synth, 6 new automated drummers to the Acoustic Drums module, plus big refinements to the midi grid/piano-roll input methods, and new VCA faders, and new mellotron samples, and refinements to the user-interface.
Quite frankly this is making it very hard for me to resist going Mac all the way.
 
It seems that Apple is trying to make it very hard for any rival DAWs to compete. One would have to be mad to purchase another DAW on Mac unless they've got money burning a whole in their pocket and need to spend it on something. In fact, the pricing of Logic makes it feasible for people to run and own two DAWs on Mac quite easily and without regret; regardless, it seems at the current price of Logic, Apple is nearly guaranteed that 'anyone' making music on a Mac will buy a copy of Logic Pro X no matter what. Slick move Apple, very slick tactics. I guess when a company has mega purse strings like Apple, they have the advantage of being able to play hard ball at their own discretion and bring a sledgehammer down on the head of any rivals.