Pretty Sad! But after using Twelve Tone Systems' Cakewalk 2 back in the '80's (MIDI only) through Cakewalk Pro Audio and on to Sonar 8.5, I found it more and more cumbersome. Mike Senior (Sound on Sound) suggested REAPER to me eight years ago and within a week I was zipping through tracking and mixing faster than Sonar ever worked for me. The audio quality (64 bit internally) and flexibility (route any audio and/or MIDI from any track to any track, make up your own bus structure if you want, use any track for MIDI, audio or even both at the same time, control any plugin parameter with MIDI or audio from the same track or from another track, etc.) sold me very quickly. Took me all of 15 minutes to create a "vocal rider" using REAPER's parameter modulation with an expander plugin.
I still use a number of Cakewalk plugins - Dimension Pro, Rapture, Session Drummer 3, BeatScape, TL-64, TS-64, LP-64, Channel Tools, and even a few very old DXi FX like the Sonitus compressor, gate and EQ. All work fine in REAPER. As do the latest VST3 plugins, anything with side-chaining inputs, etc.
I do wonder what will happen to TASCAM and KRK. I have had excellent experience with both brands over the years, and still use a KRK sub in my studio. At least there are many other good brands out there, so if Gibson wants to auger in, no wuckers! Except if you thought you'd use Sonar for another twenty years!