The big picture of VST3 is not all about plugins..
Some hardware synth editors, particularly Yamaha, are VST3 only, and there is no surer way to alienate a keyboard musician looking to move to a DAW environment than by not supporting the provided editor for their very expensive synth/workstation.
In my case, if I had not already been a Sonar user for 5 years before I purchased my $2k+ s70xs, Sonar would
not have even been on the table for consideration ..regardless of cost, capability or any other actual or perceived benefit...it simply would not have got to the starting line. Picking Sonar under such circumstances would have been to allow the tail to wag the dog.
Now, given that Yamaha Motif series has been the major market share in synth workstations by a sizeable degree for the last 6-7 years.. its pretty obvious to me that Sonar has already lost some decent number of potential customers.
had x3 not had VST3 then I would have been next out the door.
mudgel
When I look at all my 3Rd party plugs most do not have a VST3 version available. Contrary to what some are.saying I don't think Cakewalk are late to this party.