Stock markets help allocate resources to the companies that will make good use of it. We can't say something similar about crypto until speculation stops being 99.9% of the use case and it starts being used for something more practical. We may get to that point, but that's still not a certainty.
In many cases, shareholders are represented by a board of directors, to whom the CEO is beholden. Also, executives often see much of their compensation via equity in some form.
