This was my calculation of worldwide probable adoption rate based on the Korean petition to the government against banning cryptos:

S. Korea has one of the highest crypto assimilation rate in the general population. They got 218,000 petitions signed. The population is 51.25 million. That means 0.425 % of the population cared enough. Lets assume that is 1/10 of the crypto users.
That still leaves us with a crypto participation rate of 4.25% of the population.
If S. Korea only has 4.25% of the people in cryptos. The world at large has to be no more than half that. And I am estimating large here.
Conclusion: we likely have no more than 2.13% of the world population in cryptos, or better said 97.87% still waiting to come into the space.
THERE IS PLENTY OF ROOM TO GROW