TEMPEST shielding ranges from not at all cheap, to breathtakingly expensive, and what you’re describing is just one part of high level shielding. It’s not just

TEMPEST shielding ranges from not at all cheap, to breathtakingly expensive, and what you’re describing is just one part of high level shielding. It’s not just the facilities that cost, but the fact that your electricians and janitors need clearance as much as your devs and analysts. Even if data centers wanted to go that route, it would have to pass the costs on to the customer, who would need to be s very particular kind of customer with deep pockets.