It's the ultimate capital amplifier. The end goal - AGI - essentially means the ability to derive wealth from capital directly, without any pesky middlemen such as laborers who need to be paid. The endgame is capital without labor.

But, of course, in such a society, the people who don't own the robots - i.e. most of us - become "economically unnecessary".

It removes a layer of abstraction from capital to production. With AI the only question is if the compute is available to purchase, once it is, you can produce with it.

Of course, the question then is who is consuming the production, but we're not quite there yet.