With so many people around the world buying Bitcoin, it’s like a city’s power supply system suddenly collapsing. I can’t imagine it. What do you think?
I don't think that will be possible because there are people there to sell at all time. And the only thing that will change is the price which will be very high and sellers in that time will make good money from their small unit of bitcoin they have.
Bitcoin now is not in one person or individual hand but it is circulated to many hands. So it is not possible to stop circulating.