The one thing I'm certain of is that if some group of people can make a system that self learns into RSI, then several groups of people will do so. There will either be 0 RSI systems because it turns out to be impossible - unlikely in my view - or multiple. But we won't have just one.

If there are multiple they will cost money to run. In that world I expect there to be a correlation between costs and quality, i.e. the highest quality AI system will likely cost more to use than a lower quality AI system because there will likely be more compute required and so on.

So in that world, the absolute top tier best in the world frontier AI will not actually be the most used system. This is for the simple reason that such a system will be more costly than a lesser tier system that can do the job just as well.