"Breach of contract" by one party doesn't mean a court will allow the other party gets to do whatever they want. But more practically, if the creator sells the

"Breach of contract" by one party doesn't mean a court will allow the other party gets to do whatever they want. But more practically, if the creator sells the work to Netflix, they're going to get sued, and they would then be on the hook (legally, financially and reputational) for proving in court 1) contract was breached, and 2) that gives them ownership of the work product that allows them to sell to another party. Against Disney's warchest.