You didnt hear this from me

[Ciderpress]

You kinda could stop account sharing if there were some system where you had like 3 ips that could be "registered" to an account, and if there's ever a 4th all of them are randomly shut out for a random amount of time, up to some limit. This would prevent the cheesefest cleric/coth bots but still protect people who legitimately share accounts for whatever reason.