I don't know if this is realistic but as a general rule if I was contracting with someone so that my business would have higher reliability, I would ask for a service level agreement with a agreed upon amount the vendor will pay you for every unit of time there service is not up.

At least then your pain is their pain, and they are incentivesed to prevent problems and fix them quickly.

At our scale I doubt if we can get any cloud provider to write custom contracts. But if I had negotiating power, I completely agree.

Usually those agreements either just give you credits for the same service, pay way less than you lost or basically everything falls under force majeure.

If it works for you that's great, but when the actual shit hits the fan I don't think you should expect actual compensation.