Re: up to a 20 per cent pay cut overnight... For many, the cost of their current mortgage
AC you seem to have fallen into the old myth that because someone else has a mortgage there at fault for the lack of available properties. (Or your trolling)
Very few contractors are going to have more than one house. Who you should be annoyed at are the property firms that buy up land to rent and never sell, and the government for allowing that to happen. Also the government for not instituting limits on the amount of residential property that can be purchased by an individual and for not allowing enough new housing developments to fulfill demand properly, or for allowing the firms who build those new housing developments to hold on to the property afterwards to rent.
There are plenty of reason why your kids are paying 50% of their income in rent, but a contractor owning a house isn't one of them...