Spencer
That's not true. Ableton are making serious bank. Imageline, despite their free FLstudio upgrades, are also well off and make tons of r&d. Of course, we're talking about companies that are aware of what the current market wants. There's been some steps taken in the right direction lately for CW, but so much more needs to be done.
I guess I didn't put enough smilies after "That's probably because no one makes any money from it, so you might as well go out and have a beer together

"
But if you want some stats, I think the only DAW company in this industry with more than $20MM yearly sales is the Pro Tools division of Avid. The only figure I have for Ableton was from a German publication in 2012, which listed sales as 14.7MM Euros. So let's assume $18MM. The same source says the company has somewhere around 200 employees. There's also taxes, the cost of doing business, R&D, web site and servers, documentation, licensing fees (I presume - they use algorithms from zPlane and the amp sims are from Softube), BOM for hardware items like Push, marketing and promotion, etc. Add that up, subtract it from $18MM, then tell me what the average employee makes.
I don't have current figures for Steinberg but FYI, from
Sound on Sound when Steinberg was purchased by Pinnacle, "From a financial perspective, the price Pinnacle paid for Steinberg, $24 million ($8.2 million in cash and $15.8 million of Pinnacle System common stock), indicates how small the music-software industry really is, especially considering that Steinberg is one of the biggest players."
By contrast, a
single Whole Foods store averaged about $34.6MM in 2014. Just sayin.' That's about 10%
more than what the mighty, and cash-flush, Apple was said to have paid for Emagic (although I don't know if that was all cash, or a mixture of other equity - hopefully they took Apple stock, LOL).
Company #1,000 on the Fortune 1000 for 2014 made $1,570MM. Don't expect to see a music software company in there any time soon.
The people I know who work at music software companies do so because they love what they do and the find the job fulfilling. They are often musicians themselves, and enjoy the challenge of creating cool stuff with relatively little resources. It's a shame so many people "on the outside" have so little appreciation of that.