Why do you think this? Assume, that Cryptos will be a future currency .. it will not be BTC, just because we have no "global order" and US will not accept to have no full control over their currency. Easy like that. So IF cryptos were used, each continent at least will have its own one. But actually .. looking at the current warfare against money laundry .. no .. don't believe, that big entitites will accept a cryptocoin.

If that happens, BTC value suddenly drops to zero.

But I am sure, at the moment someone can still made good money with BTC Bubble, just because so many people are believing in it. Believe is the only value, BTC has at the moment.