That seems like a lot, but compare it to Apple -- the market cap of just this one company's stock is currently ~2,238bn.
The market cap of gold, US dollars, Euros, etc. are all many times more than Apple. The value of all BTC is a tiny microscopic speck compared to the amount of USD or gold in the world.
This means (among other things) a few small players (with tiny capital relative to, say, the size of all USD) can swing the BTC market either way with a comparatively tiny amount of value moving around.
That would seem to greatly limit BTC's usefulness as any kind of inflation gauge for the broader economy.
600bn is more than gdp of majority of countries.
As far as I know, they have not proven they even have 1 billion on reserve. How can they claim 21 billion?
Is this pyramid scheme the real reason bitcoin prices are so high?
Asset prices are up across the board.
Over the long term (several decades) you can expect it to perform like gold once it has turned into a mature market.
Bitcoin gives a PRICE APPRECIATION RETURN
One could call this then a “greater fool” play except it has algorithmic reduction in supply which repairs “greater fool” aspect.