I think OP is overgeneralizing a little. Cloud is all about buying resources(IaaS) and functions(SaaS) of your choice. That means, one can purchase storage and

I think OP is overgeneralizing a little. Cloud is all about buying resources(IaaS) and functions(SaaS) of your choice. That means, one can purchase storage and traffic like the case here, or CPU time and memory for data processing. One specific scenario can work for someone, but that doesn't define what cloud is or should be, because it's all about choice.