500k

>>2970862

if every owner would be absolutely adamant, yes, theoretically. Although even afterwards, the rest of the world would probably move on to something else rather than anyone shelling out 500k for 1BTC. In all likelihood, though, most would buckle as soon as the price would double and sell their shit anyway.

If someone with a metric fuckton of money started offering 500k per btc, and could keep it up for a while, the price would rise quite a lot.
I don't know how you envision the "demanding" though.

If everyone agreed to put all USD-BTC sell orders at 500k then we'd have a bunch of millionaires on paper but the demand wouldn't be there, the market would be illiquid.

Read a long article yesterday making the case that there is literally one whale that more or less manipulates the the fuck out of btc.

If you had 20 million you could very likely manipulate the market to make btc any price you wanted it to be. Myabe not 500k but 20, 50? Probably.