>Private enterprise enriching uranium is a seriously worrying development...

Or seriously exciting. We might actually get affordable, clean nuclear energy this century.

Urenco USA is a private enterprise that enriches uranium. It built its first American enrichment plant 20 years ago, and lately it has been expanding capacity:

https://urencousa.com/about/our-history

The parent Urenco company has been operating private uranium enrichment plants in Europe since the 1970s.