That's curious.
Large corporations wind up creating internal policies, controls, etc. If you know anyone who works in engineering at Google, you'll find out about the privacy and security reviews required in launching code.
Startups, on the other hand, are the wild west. One policy one day, another the next, engineers are doing things that don't follow either policy, the CEO is selling data, and then they run out of money and sell all the data to god knows who.
Google is pretty stable. OpenAI, on the other hand, has been mega-drama you could make a movie out of. Who knows what it's going to be doing with data two or four years from now?
I acknowledge that it’s more of a perception issue than anything, but my _perception_ is that I don’t trust Google as far as I can throw it.
Alternatively, who would you trust with your data, an Ad company run by a McKinsey executive, or an NPO with a direct revenue stream partnered with Apple?