Forget money, they could have changed the landscape of the country. If they had this access tool that allowed them to access any account, they could have went on Trump's and said "We are sending armed forces to attack China right now" or they could have just said "Fuck the [insert ethnicity here]" and there is not a single person on the left who would have believed Trump's account was hacked, it would have led off with every news agency in the country.
"Trump accidentally tweets "fuck the _____" and claims he was hacked.
And the president's account being hacked would've been a terrible look even if people did believe him, but CNN would've had experts on making shit up like "sources close to me say the president said his account can't be hacked" and Twitter of course would've probably lied and said "our records don't indicate any suspicious activity in the president's account."
Whoever this was probably could have changed history if they wanted to. I wonder if they realized that.