Do you pay for computing cycles or for a computing instance? If your cloud provider lowers its performance/efficiency by 30%, isn't it up to its customers to s

Do you pay for computing cycles or for a computing instance? If your cloud provider lowers its performance/efficiency by 30%, isn't it up to its customers to switch? But where to switch too? There's no choice among the big cloud providers. They all use Intel and AMD in varying amounts. As a cloud user you are stuck with Intel or AMD chips. Demand doesn't change, supply is lowered. Looking at it like this, it is more likely that demand for cloud resources will rise, and as such revenue of the cloud providers will as well.