What makes you think they'd necessarily intervene in the French revolution? And even if they do, as an island they're harder to invade, especially with the British defending them. And anyway without Napoleon who even says the French will be as successful in Italy.I don’t see the Kingdom of Corsica lasting for that long in the grand scheme of things. It would undoubtedly side with the monarchists in the French Revolution, get invaded and made into a Republic or apart of Revolutionary France. And if they choose to stay neutral, they will likely get invaded anyway.