Bitcoin is still just an experiment. I think it will take around 20 years to get to $200k, because to justify such a high price there are many things that need to be in place and those things take time. 
experiment? after bitcoin can last 7 years you still say it is still on experiment even though I know you say it like that because it doubted whether bitcoin can reach the price of 200k in the future, I'm not sure too because in my opinion that price is too high to be achieved by the financial capacity of human beings in general2MB or greater block size is to attract users to show them the benefit of bitcoin in the transmisson of money.