Maybe I look at history with rose tinted glasses but my experience tells me people are spending more and more money. We are a consumer society on steroids. I see so many individuals driving around in $60k cars, living in massive homes, buying tons of junk on Amazon. I wonder if that has more to do with it.
As for preventing escape capital. The issue is, I am not sure how you do it. It is easy to had wave and say a tax but I believe its very hard to create new rules without unintended consequences. I am not opposed to the idea but I am not sure what other consequences will be felt.