What Acemoglu is saying is fundamentally a Marxist argument, and I'm saying that with no value judgments attached, I'm just pointing out factually that he's essentially saying the same thing as Marx. In summary, technology tends to disproportionately benefit the people who can afford to implement it (the owners). AI is a means of production. While it's currently possible for anyone to download the means of production for free, no violence required, currently you've got several large AI companies (like OpenAI) trying to pull the ladder up behind themselves under the guise of safety and ethics concerns. They're trying to protect themselves from the tendency of the rate of profit to fall by angling to limit the pool of competitors. Indeed, much of whether a technology benefits society at large is dictated by the barriers to entry to using that technology. If they are successful, the barriers to entry will be made much higher, and it will all but guarantee that the benefits of AI stay at the top.