Here in the UK we have started imposing tax penalties on buy to rent that disincentivizes owning more than one or two rental properties. The problem with punishing institutional investors is it would take huge amounts on investment out of the housing market, just as we have a massive need for more housing. We need more houses for people to buy and more new housing available to rent. Rental properties by themselves aren’t a problem, it’s taking houses out of individual ownership and transferring them to the rental sector that’s the problem.