You can run VMware Cloud in AWS to get this, but it's not as useful as it sounds: you can't have the pair of fault tolerant instances across regions or even AZs

You can run VMware Cloud in AWS to get this, but it's not as useful as it sounds: you can't have the pair of fault tolerant instances across regions or even AZs. You still need another plan for recovering from region or AZ failures, and if you need that, why not just also use that plan for intra-AZ failures instead of shelling out for VMware?