There are multiple things happening here that make it complicated and there are too many unknowns. If the issue is that they cant find people that qualify due to not making enough money, then this is the government currency control issue coming home to roost, which I can explain if it helps. If its an issue where the units need to make a minimum to pay for the mortgage, then its a problem with too little supply of units to buy pushing up the cost of ownership of multifamilies. I dont know what is going on in your area.
But the post seems to be about owning SFH or something owned. That is a separate issue with similar root problems.
There is a series of things you are wrong about here and I dont really want to waste my time arguing. Real estate is my business and I am sucessful at it, is there any question you want answered, because I am not going to argue anymore.