The core reason space datacenters are uneconomical, is the 5 year replacement cycle. Includes trashing the solar and radiators every 5 years even if they could last 30+ because datacenter modules need to auto-deploy their own power and radiators. Ocean deployments would be far better. Wind/solar/batteries doesn’t need frequent change. Just drop in a new module every 5 years, while taking out the old one, and rebuilding its insides.