It makes sense to think about price in the context of your business. If your entire infra cost is a rounding error on your balance sheet, of course you would pick the provider with the best features and availability guarantees (choose IBM/AWS). If your infra cost makes up a significant percentage of your operating expenses, you will start spending engineering effort to lower the cost.

That's why AWS can get away with charging the prices they do, even though it is expensive, for most companies it is not expensive enough to make it worth their while to look for cheaper alternatives.