Owning your own home

Mad Margaret allowed people the right to buy and Council tenants took full advantage of this when they could. The issue is that of all the homes that were sold under "right to buy", about twenty thousand new homes were built. This is why we have a housing shortage, which in turn is why rental costs have in the past and will in the future increase.

I don't buy this argument.
It's not like they were empty properties before people bought them. They were all rented long term and were no more available to future tenants than they were after being sold.
Councils back then didn't have the money to maintain the homes they did own, never mind build new ones, so they weren't going to build enough to satisfy demand anyway. Barely any council houses were built after early 1970s.