My question is about the bitcoin price in exchange of FIAT, not taking into account the slight difference of fees between exchange platforms (Binance, Coinbase....). As far as I know, they all propose the same Bitcoin price, which is today (after I googled Bitcoin Price): 44926.29 euros.
Since the Bitcoin price in FIAT is based on offer and demand only (am I right?), how do those platforms find the same course since they have a different vision of people wanting to buy and sell Bitcoin? For example, it is my understanding that: if I sell on Binance 100 Bitcoin, the price of Binance should go down, but in the same time if Alice buy 100 Bitcoin on Coinbase, the price there should incrase.
So how eventually do those platforms find a common price?
The suggested related question partially answers but there are still some points to add:
- Who performs the arbitrage?
- How fast is it?
- Does it work for all crypto (of course traders work on Bitcoin but do enough people work on other subjects)?