If somebody thinks the computer can make a better PowerPoint, what business is it of yours to stop them from using the computer to make a PowerPoint?
There's a big political problem to solve, but it's how to give most people decent material standards of living if computers are doing all the work, not how to freeze things in place so that people can keep doing tasks that (assuming success) the computer is better at.
Again, this analogy makes no sense. People use PowerPoint, they don't get replaced by it.
The goal of AI companies is to replace workers entirely; that is the only way their valuations make sense, and OpenAI's charter says this explicitly.