It's currently estimated about 3 million people own some amount of Bitcoin.
That's about 0.3% of the population of Europe and North America.
If Bitcoin becomes mainstream, and say 50% of people in Europe and NA own Bitcoin, how much would it be worth?
yes, and I thought its less than 1% in the whole country has own bitcoin and the current price was already around $7.5k/btc. Let's assume that each 1% was presenting a $7.5k for price, it means when bitcoin become mainstream and used by 50% of population the price would be around $375k/btc and its minimal. Well that just a simple assuming from me.