Everybody can win

Just reading a book about trading and one of the traders makes a point that in a market you need to be doing the opposite of what everyone else is doing because by definition everyone can't win in the market with the same trade.

But with bitcoin it's probably the only asset that everyone can go long on and everyone can win. If you are long on bitcoin it means you are short everything else. Bitcoin is not a zero-sum game like all other markets because bitcoin is what everyone can use to value everything else. It won't be a zero-sum game trading bitcoin until it has accrued this value from all existing assets used as a unit of account.