Capitalism has evolved through many stages past what Marx would have known. His form of exploitation was based on factory workers and the division of labor. This form of capitalism has evolved as Western capitalism has moved into a postindustrial society. Capitalism has undergone several phases such as capital storage based on real estate, capital based on debt, and now capital based on capture of intellectual property. Your theory may have worked for industrial capitalism but doesn't work for 'late-stage' capitalism as we know it today.

'Exploitation' is based now on real estate, debt, and intellectual property. Not labor.

Intellectual property is the basis of capitalism today. Companies like Apple, Google, Pfizer, and Monsanto own the means of 'production'. We are all exploited by not owning our own intellectual property. 'Exploitation' is far beyond labor based, and occurs as corporations and government collude to capture all means of production. Consumers are the new exploited class, not workers.