No. You are too credulous of economists' simple models in which firms are pure profit maximizers. Most firms are not! Small businesspeople have complicated motivations! 1/
The "shareholder value revolution" that began in the 1970 was explicitly about *turning* big corps into the "efficient" profit maximizers of economic modelers. Trying to simplify the world to match ones own limited understanding is often a mistake. It was here. 2/
Corporations can continue to exist, but we need to reverse the shareholder value revolution (under which they've been incentivized to drain cash quickly to shareholders), discipline them with more competition, recast profit as a constraint (you gotta at least break even) rather than objective. /fin