Why should it be legalized for all countries in the world, do you aim to increase your own portfolio by owning bitcoin before that happens, or do you really want mass adoption for Bitcoin?
In fact, even though bitcoin is not officially announced as something legal in a country, p2p transactions in related countries must also occur... the demand for bitcoin is indeed quite large, but not as big as what you are talking about... if the demand is that big, the price should not be $80k anymore, right? Don't exaggerate Bitcoin.. moreover when it is legal in 195 countries in the world, won't that just make Bitcoin even rarer to transact? Yes because the price will be very expensive... even small transactions will cost a lot... and people tend to use it as an investment instrument, not to transact anymore.