It's no different from the many other tools used by people to do their jobs. Once they reach an optimal form, they stop changing unless some drastic technological change occurs. Hand-tools for woodworking hadn't changed for centuries, until electricity was introduced. Electric hand-tools have only had small gradual improvements since then.
If the uncertainty was actually a bad thing in the eyes of the big cloud companies that pushed these designs, it would not have nearly gotten as far as it did. It's a way to control how the tool is used, given that it's powerful, making it too usable is not profitable.