Business 101 is buy low, sell high.

Winning an evenly matched game of prisoner's dilemma with billions at stake is about as close to 4D chess there is.

Buy low esteem, sell high esteem - the concept comes from Hetty Green (long ago billionaire.)

I'm not too familiar but can you elaborate on how the screwing happened.

CZ tweeted "Oh shit, FTX is basically insolvent, we're gonna have to dump all our FTT magic beans!" or words to that effect.

Then, when FTX predictably tanked, he stepped in and generously offered to buy out FTX.

Same thing Soros did to the Bank of England's fake pound.

Typically you don't expect Bank of America and Chase to do this to each other.

...anymore.

Porsche and Volkswagen did.

Market manipulation is not exactly business 101.

I'm not sure this is market manipulation?

Depends on the intention I guess. They might have been genuinely worried that the token was going to crash and also didn't trust the counterparty to be able to pay for it. In this case it would have been a genuinely legitimate transaction.

But if dumping the whole stock was done with the intention, even partial, to crash the price, then it seems to me that it would be manipulation. Of course crypto is unregulated, so it wouldn't be illegal.