Why did Canada stop investing in immigrants?

Canada has not closed investment immigration. You are talking about the closure of the federal government's investment immigrants, but the investment immigrants in all provinces of Canada are open. There are many investment immigration projects in Canada, and each province has different requirements. You can choose different provinces according to your own situation. Because there is no concept of household registration in Canada, no matter which province you apply for, you will get a Canadian maple leaf card and you can freely choose the city where you live and settle down.