It's not just that we have billionaires, is that they are extracting most of the value out of our economy, and that proportion is only increasing. They have rigged the system in their favor, and it is working perfectly (for them).

the richest 0.02% of Canadians now possess more wealth than the bottom 80%

Is it intentional exploitation? Well, it could just be a coincidence that the influx of international students has helped keep wages down and put an almost unbearable pressure on rental housing, much of which is owned by investment corporations. It might be helpful to look at who is funding the lobbyists walking the quarters of power in our provincial and National capitals.