The shareholder system of control foists massive negative externalities on the public while concentrating profits in the hands of a few.
It's like advertising toxic waste disposal for $100 a tonne, then dumping the carcinogenic sludge in the town square while keeping the cash for yourself.
If you're a real capitalist, you peel off 1% of your windfall to support politicians who sabotage any attempt at regulating toxic waste disposal.