Final point in regards to cashflow and making money.
Canada GOUGES your income with taxes. Paycheques get eviscerated before you toss them into the pit that is cost of living and the more you earn, the more they take.
The CRA doesn't fuck around with taxes.

As far as getting rich in random shitholes. Canada, despite its enormous size, has a laughably small population in modern country terms. With less people, comes less opportunity to skim some wealth through sheer numbers, which is how many make bank in the 3rd and 2nd world.
Furthermore, imagine you live in a country full of useless lazy niggers, it is not hard then to make them part from their money by providing any service that they are either too dumb or too lazy to do themselves.