Although CEOs are parasites whose interests don’t necessarily align with those of their companies, there’s also no need for conspiracies when rapacious idiocy will explain the situation. Unity’s been short on money lately and laying people off, after spending billions on acquiring companies - they’re hurting for money and doing something dumb for short-term profit (and damn the company’s long-term future) isn’t implausible. Especially when the CEO has form for suggesting self-defeating money-grubbing tactics.
Personally, in balance, although I don’t completely discount deliberate sabotage, I think the management being idiots seems the most likely. The chaos around the announcement and unanswered questions shows they clearly didn’t think through this decision and had huge blind spots about what the impact would be, and I suspect they’re experiencing some rude awakenings right now.