The market's most crowded trades could be causing dangerous bubbles

The market may be blowing up some bubbles through excessive crowding.
Bubbles, simply put, are sins of excess driven by too many people reaching for too few goods.
The tech bubble saw investors clamoring for a piece of internet gold, which drove valuation to a popping point. The housing bubble saw similar events occur in the real estate market.
It is not unreasonable then to think that investors would be crowd-averse. Too much money rushing into too few assets has a history of ending i