Solar power in space is not cheap. It's efficient. A solar panel in space produces 4-10X as much power as one on land.
Which would be relevant if solar panels or land were scarce and expensive. Neither are. It's easier and cheaper to put 4-10X the number of panels on land.
I choose to accept reality. Until someone can do it, it hasn’t been done. Once that happens, this will cease being vaporware. The bubble is filled with vapors and those who drank the koolaide can’t seem to get themselves to accept.
You don't in fact have viable solutions to this problem when orbital launch prices are above like 100USD per ton, probably needs to be closer to 20USD per ton.
The heat problem has demonstrable solutions that people who are physics challenged can't seem to get themselves to accept.