So according to your scenario, exchanges such as FTX, Bybit, Binance, Coinbase Pro, Bitfinex will coordinate to act as market markers while all of them shorting at ago so that the market drops, and they earn while all "normal" traders trying to long lose out via liquidations?
The comparisons you're trying to draw are not even close to how casino operate, if that was your intention.
LOL. Which exchange will leave evidence of its manipulations at all, will it immediately lose its license for this? If I cannot provide data that residents of prohibited jurisdictions can use the exchange, then they are not there. Questionable logic.
Each exchange has in its arsenal market makers and bots that work for these market makers. And for this they do not need to coordinate together. Haven't you ever read about cases when on some exchange, during a time of high volatility, the price was very different from all the others. So, this is all the work of just internal market makers. But not a single exchange will admit this, they will come up with their own stories about the fact that it was a server failure and that some user mishandled the platform’s tools, and therefore sold a large volume at the market price and other blah blah blah.
The most striking example is the Bitmex exchange, whose manipulations have been proven. In 2020, it was found that there were American market makers on the exchange who carried out illegal activities, and (oh my god, what a coincidence) these same American market makers were at the top of the exchange table in terms of traded volumes. That's such a coincidence. And yet, after they were discovered there, 30% of liquidity suddenly leaked from the exchange (which at that time was about 60,000 bitcoins).
Then the investigation went even deeper and it turned out that the exchange had been using similar schemes since 2018, deceiving its customers and investors, and the top managers of the exchange replenished their accounts with hundreds of millions of dollars that they had earned thanks to such schemes.
Binance, FTX, they all use similar tricks. Or do you think how their CEOs suddenly become multi-billionaires in 2-3 years? Yeah, they earned it all from commissions, of course, of course.