Trust is important, and Google has a big rep for killing its projects. As well as making the most moronic braindead decisions in handling what they don't kill off.

No one is going to build on top of anything "Google" without having a way out thought out in advance.

Not that important for LLMs, where drop-in replacements are usually available. But a lot of people just hear "by Google" now and think "thanks I'll pass" - and who can blame them?