I’ve considered instead of energy generation which is pretty hard for human biomechanics to do, we could have a gym where you build stuff. Like today’s workout is you have to build a wall.

Carry a bunch of wood around (squat, deadlift, carries ). Do some sawing (row, push up). Lift wood overhead (press).

And at the end of the workout you’ve got a wall!

It likely will stabilize, but it might become more of an enthusiast market. People don’t necessarily need a PC anymore.

Do you mean the efficiency question? I’m just deducing if they were competitive in servers Intel would jump at that opportunity.

As for the PC market, just looking at unit sales: https://en.m.wikipedia.org/wiki/Market_share_of_personal_computer_vendors

And as for margins, well the exact information is a bit hard to find but in general lower end products have tighter margins and the buyers for them are more price sensitive.

Eh unless they have the most efficient overall, they won’t make inroads into the server market. The entry level laptop and desktop markets are getting smaller and has less margins.