What makes me quite confident for this 2020 bull run is that a significant amount of money are actually from institutional investors, and it's pretty safe to assume that they're far far less easily affected by beginner investor emotions like FOMO and panic selling.

With that said, I really don't want to say the classic "this time it's different", as there's still a good chance that we're going to have something similar to 2017, just with a different price roof and price floor.