There's solutions to everything you mention and as I said, usually when sanctions are applied to countries, companies and individuals are meant to deal exactly with this.
This could range from quanta mandates on the supply side (the RAM manufacturers themselves in this case) to imposing secondary sanctions on 'other companies [that] would step in to provide data center services for a fee'
If the US and the EU did this, these other companies would be mega careful about to whom and how they provide services to, the same way Chinese private companies today are generally super careful about not violating US sanctions.
This could range from quanta mandates on the supply side (the RAM manufacturers themselves in this case) to imposing secondary sanctions on 'other companies [that] would step in to provide data center services for a fee'
If the US and the EU did this, these other companies would be mega careful about to whom and how they provide services to, the same way Chinese private companies today are generally super careful about not violating US sanctions.