Wouldnt there be quite the HUGE interest by govs of US, russia, china to own huge parts of it?
I'm afraid it would need to be the other way round... first the world governments would need to be interested in using BTC as a reserve currency, then we would see a market cap like that.
Nonethelesss I think USD 1M,- is way out of league. In my opinion even USD 100k,- is already a long shot, but there's still a lot of growth potential nonetheless.
Well, all you'd need is for the dollar to become worth next to nothing