Because of reasons like this:
When you consider that the president of the MIDI Association is from Yamaha, it’s just odd that Steinberg were so keen to snub it out of the VST3 spec - despite decades of MIDI based VST2’s.
Sadly their arrogance on such matters will be what bites them on the rear now that another universal format is ticking the right boxes. It also doesn’t help that this comes at a time where Steinberg has closed the door on VST2 - and yes, we know there were warnings, but people are still bitter about it which adds to the anti SB sentiments.
MIDI 2.0 is incoming, other hosts are leading the way in regards to plugin modulation - really, it’s a perfect time for another standard to come into the game and pick up.
As a Cubase user, I’d rather there not be the confusion of a secondary standard as we won’t be getting support for it any time soon, in fact we won’t even have VST2. The internal operations of Cubase are so out-dated it’s no wonder they won’t push the VST3 format to support what more advanced hosts are requiring.
I mean, we’re still having to use MIDI inserts to modulate plugins via MIDI CC messages, which SB themselves wanted to isolate from plugins. It’s a bit of a joke really.