I agree there's a great market for specialized ones. I own some of those, like a vacuum bot.

But the generic robot is the endgame. I think Musk tries to achieve the endgame, probably too soon. FSD, interplanetary travel, etc

You do realize, that the fully generic robot will need tools, just like humans. You can't put everything into the robot. So it can be used to supply power to the tools, but then it is just a large walking battery. But we already have power outlets. That leaves the robot to just control the tools. But you can also just send the signals over wifi instead of letting the robot walk to the tool. So a central home automation server is what your endgame will look like.

It's not like I can't think of a single use, I do: an army. Sure wheels get you faster, but when you have an army, them being able to climb or move along larger steps is an advantage. A long stick (arm) is ideal for mounting and directing a weapon to fire missiles. Then you only need a observation unit, ideally at the top and maybe some communication tools also at the top, et voila you have a "head". The human form is ideal for fighting and that is what it evolved for (hunting). But I don't know if we want that wannabe dictators aka. billionaires to have a large army, which also doesn't even have moral, so they could revolt. They sure would like that.