Turning them into power hungry competitors for a slab of treated plastic sounds pretty bricky to me, like pushing firmware to a phone that turns it into a fancy front camera mirror. Even if Google just disables the software entirely and turns these smart panels into a big, rectangular light panel, they still serve some function.

Ideally you'd write some sort of legislation that will ensure that products like these become open so that third parties like Zoom can integrate with them so that they remain functional.

I can't think of a good way to describe that concept in legal terms, though, at least not without making it very hard to sell any connected device at all.