I thought that was something trivially obvious stated about fully leveraging the benefits - that they don't control other's clouds and thus they can't use all o

I thought that was something trivially obvious stated about fully leveraging the benefits - that they don't control other's clouds and thus they can't use all of the same sorts of performance or efficency boosting tricks. (People would be way more mad if they did as it would require hacking into say Azure to gain root access.) Not a domain expert but it is my interpretation. If you make the engineering decision to go multicloud for whatever reason those are inherent trade offs you need to be aware of. They have their own agenda of course in addition to any actual fundamental "real" in bulk efficiencies that price reflects.