Rightmove is overrun with tenanted property for sale. If the tenants don't want to buy their current place where are they going?
Landlords exiting in large numbers mean investors are reduced. Yet the properties are marketed for investors or homeowners. Homeowners tend to avoid tenanted properties.
A few years back tenants would move out and the landlord would refurb for sale. Then the prospective homeowner knew what they were getting. This new red tape is off putting and means people will not move.