Very few Americans have personal ID so if they intend to do business in America, they should be prepared to accept drivers licenses.

Maybe they just don't want to sell to Americans, which is always allowed I guess, but setting up an American VPS provider and not accepting the standard American KYC verification methods would be a rather incompetent way of doing business. It'd be no different from doing business in Europe and only accepting drivers licenses and not accepting passports/ID cards for identity verification.