Usually you don't agree to contracts that let you be fired for the sorts of things that don't end up with you in court. Buyers, being reasonable, refuse to sign contracts where they can't fire you for being a criminal.
The difference between a court and a contract like that is that the court is impartial and has a clear bar of criminality ("innocent until proven guilty" to some standard of proof), whereas it's always in the company's interest to fire you at a mere accusation of a potential crime (or non-criminal wrongdoing)...
Which is why, when you're selling a company for hundreds of millions of dollars in unvested stock, you don't sign a deal where the buyer can fire you for "mere accusations of a potential crime". Uber lost the lawsuit with Google and had to pay a quarter of a billion dollars. I'm sure their contract said something like "if you have materially misrepresented information to us that results in us getting sued for a quarter of a billion dollars, we can fire you".
