That's not true at all. There's nothing that says a company's leadership is tasked with maximizing short-term / immediate value. That is not the inherent expectation of the capitalist system. Your theory rests on the false notion that all shareholders are alike; they are not.

A company can choose to be focused on creating long-term value, and many don't get punished for that either - see: Tesla, Amazon.

The most successful examples are of long-term value creation, not short-term. The best returns to shareholders come from long-term value creation and focus.