It eventually will be. If something yields a guaranteed return, the cost to buy that thing increases exponentially. The math is very simple and no amount of politicking can hide it.
Edit: let's use the classic investing "rule of 72" to illustrate (multiplying the rate of return and number of years to double your capital will total 72). Assuming an annual increase in house value of 5%, which is way below what is happening in Canada right now, the value of a house will double every 14.4 years. Every 29 years (roughly a generation nowadays) the price will quadruple. Grandkids would pay sixteen times more for their grandparents' house than the grandparents did.