Leaving AI to a handful of companies is in my opinion the fastest route for inequality and power concentration/centralisation, and this is in a way an AI disaster we should be worrisome. Power corrupts, great power greatly corrupts, this is not entirely new. From where I stand, it looks like the pandora box has already been opened anyway. The era of hugginface and/or Llama2 models is only going to grow from there.
I disagree entirely. We shouldn't be hoping for a complex ecosystem of small, shady companies nobody ever heard of, like happened with ad networks [1]. Or worse, a scam-filled ecosystem like cryptocurrency. Or worse, an underground ecosystem like the criminals who share cracked passwords and credit card numbers. Big companies are easier to regulate. [1] https://lumapartners.com/lumascapes/
But the problem isn't regulating the big companies, or the smaller companies, or underground entities. The problem is state-level adversaries like China who might misuse a technology, whether it's AI or anything else. Such adversaries can't be regulated by laws or executive orders or UN declarations; they have proven that many times in the past. The only way to control them is to have sufficient counter-capability against whatever assets they have. And government regulation is a terrible way to try to achieve that goal.