One thing to keep in mind is that post-tech crash in 2001, there was consensus (among many investment firms) that the future growth of the US economy going out

One thing to keep in mind is that post-tech crash in 2001, there was consensus (among many investment firms) that the future growth of the US economy going out decades would be lower than the 90’s, think a drop from 6-7% annual returns to 3-4%. That turned out to be be wrong.