Precisely. If you’re going to have a hot failover, it behoves you to have an entirely separate entity billing you for that hosting.

Honestly, I don’t know where the downvotes are coming from. Do people have no clue about service resiliency? I can understand if it’s a personal project or you haven’t yet scaled to paying customers, but anything at scale with serious money involved needs to be completely independent of the underlying hosting. It should remain up even if an entire provider goes titsup.