This ignores the "disruptive technology" aspect. Consider that most of the largest corporations are very young. Even Apple is only half a century old. 2 decades

This ignores the "disruptive technology" aspect. Consider that most of the largest corporations are very young. Even Apple is only half a century old. 2 decades ago, they were doing completely new things that no one had ever done before. No one "understood" mobile computing before it took off. Companies get a quarter trillion in cash by doing something really well that others aren't doing. Nuclear fusion powered perpetual motion machines certainly fit the bill...