A Dyson cloud is a similar mega structure but not a continuous surface. I think it is more commonly referred to as a Dyson swarm. Isaac Arthur [0] had an episode about it in which he mentioned such a structure to be quite feasible with modern day technology.
He means a Dyson swarm and we are not centuries away from achieving this. The economical sense is on a different paper. Having ASIC miners in space connecting to something like Starlink is entirely possible even though not cost effective. https://en.wikipedia.org/wiki/Dyson_sphere#Dyson_swarm
[0] https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g