Using a single provider is a single point of failure. It may be that this provider has lots of internal failure modes, but you're still one credit card problem or fake legal request or one mistake away from experiencing the primary failure.

If you actually care for the resiliency necessary to survive a provider outage you should have more than one provider.

Which means you should be running your own origin and using the simplest CDN features you possibly can to make your use case work.