The way I see it (I'm thinking along the lines of deplatforming more than outages)...
Theoretically the AppViews are replaceable (assuming they're open source)
If the relay blocks your PDS and you connect to another relay, you need the entire rest of the architecture to also connect to that other relay to maintain your apps and frens
Each relay ingests the entire network
Each component ingests the entire network from each relay
So that's double the resources per component for 99.9999999% of the same data
Who is going to pay for that 🤔
I think it would have to be the new relay provider
Then where is the demand coming from to cover those costs