Given that 50% of the state rents and you would make it illegal for them to continue their current occupancy arrangement? Not going to keep replying.
Obviously not everyone could afford, and not everyone wants to, and that transition process would be dramatically inefficient. (For example, inspectors could charge a fortune with so many people trying to buy so many homes)
It's ridiculous to suggest outlawing 50% of a state's living arrangement.
Good solutions consider the current state, they don't skip past it entirely
Plus, even if you are putting 50% more capacity on the market, you are also putting multiples of that in demand on the market, since renters who don't know each other often live in the same house.