I'm a hobbyist. I found out about this when I thought "you know, I should check in to command center and update, haven't done that in a while", it wouldn't connect, the site wouldn't come up, so I checked Twitter.
I've been using Sonar on and off for years, mainly because it handled MIDI so well, although I don't need that as much any more. I upgraded when I didn't have to, just to be able to play with the newer stuff, got into things a bit more and went Platinum, and I was liking the subscription model even.
So, I'm going to stick with it until bits start falling off of it, or I move to a new system (which shouldn't be any time soon <knocking wood>)