I think there's a concern also that smaller companies can gain a competitive edge via resistance to reputational damage. As Yann LeCun recently tweeted:

'By releasing public demos that, as impressive & useful as they may be, have major flaws, established companies have less to gain & more to lose than cash-hungry startups.

If Google & Meta haven't released chatGPT-like things, it's not because they can't. It's because they won't.' (https://twitter.com/ylecun/status/1617908306420600833)