The shift away from proprietary formats is long overdue.
As a composer and arranger working with different studios, I need multiple DAWs installed for compatibility. Every time I open my DAW or Gig Performer after a few days, it rescans all plugins. With around 800 installed, that happens across AU, VST, and VST3.
I hope Apple and Avid are holding meetings after this decision to help simplify the life of library/plugin makers. As an example AAX requires a complete mess to compile and test their plugins, and several AU plugins are just wrappers aroud VST that add another layer.
I really hope the next five years bring real standardization and smoother workflows.
It sucks to say but I completely stopped using DAWs and being into music production a few years ago when I completely switched to linux.
I have always felt the industry of digital audio processing and software to be overcommercialized and ripe for something akin to blender to change the game.