Fair point but it only works as long as principles of enforcement are there. For example, there is no compulsory register of rents in Ireland that enables enforcement on a per unit basis. Without this there is no way of tracking exactly what differences in rents are, particularly in the event of tenancy changes (which in Ireland are supposed to retain continuity of rent level, but instead, I have seen incidences of rent increases as much as 90% simply because there is no way for incoming tenants to know for sure what exactly the leaving tenants is it was paying, and the prior tenant who had already left is unlikely to complain).
Fair point but it only works as long as principles of enforcement are there. For example, there is no compulsory register of rents in Ireland that enables enforcement on a per unit basis. Without this there is no way of tracking exactly what differences in rents are, particularly in the event of tenancy changes (which in Ireland are supposed to retain continuity of rent level, but instead, I have seen incidences of rent increases as much as 90% simply because there is no way for incoming tenants to know for sure what exactly the leaving tenants is it was paying, and the prior tenant who had already left is unlikely to complain).