[beagle3]

The x86 emulation for fallback is (I’ve heard - not tried) usable for the first time.

Microsoft tried in the past without a Rosetta equivalent; Apple succeeded twice with Rosetta. They did not try to switch cold turkey the way Microsoft did.

[pjmlp]

It doesn't cover device drivers, nor stuff like DAWs plugins.

Apple doesn't care about backwards compatibility like the PC, who doesn't move, stays behind.

[beagle3]

Are you familiar with anyone who uses a 20 year old DAW?

Retro Amiga trackers don’t count.