There are claims in the media that Microsoft is going to build a $100 billion computing facility for AI that will use 5 GW of power. Since the power is needed 24/7 they want to use nuclear power rather than renewables:
https://www.datacenterdynamics.com/en/news/microsoft-openai-consider-100bn-5gw-stargate-ai-data-center-report/
https://www.reuters.com/technology/microsoft-openai-planning-100-billion-data-center-project-information-reports-2024-03-29/
That is of course, over 100 times the cost of any current supercomputer, and over 100 times the power budget, enough power for several million homes.
Naturally, if this is true it may be the case that other large tech companies in the US and China build similar facilities, each dwarfing the computing resources of the government laboratories unless they follow suit.