1. Building housing isnt illegal and acquiring housing is far from impossible
2. Compute cost hasn't ever been constrained by "how many datacenters get built in a year"
3. When were tech workers ever affected by "absolute compute power" rather than what their workstation has access to
It doesn't have to be made illegal, just supply-constrained; many cities have zoning regulations pushed by NIMBYs limiting development (and pushing rents sky-high).
I'm not an engineer, but it seems hard to imagine that a lack of data center capacity won't have an effect on prices for cloud compute, which will have downstream impact on what workstations have access to (especially since more and more programmers are becoming reliant on coding LLMs).
And so on