"Not sure if possible, but they should have a rule where a single person can only own X domains." Domains can be owned by companies and other entities. So ther

"Not sure if possible, but they should have a rule where a single person can only own X domains." Domains can be owned by companies and other entities. So there would be nothing to prevent someone from forming different entities and owning domains. And in any case you are talking about a system that is grandfathered. You're not going to re-write the rules for millions of existing domain owners at this point.