Capitalists provide a service to workers: access to capital with no risk, and immediate payment for services. Meanwhile, starting your own business brings both risk and a long wait before the profits start rolling in.
In the conditions of a labor shortage, which necessarily materializes if wage rates go below the point corresponding to full employment, the payment of higher wages provides exactly the same benefit to employers.
Alexandria Ocasio-Cortez is aghast that some people like to pick up a few bucks doing work which brings no prestige. This is part of a larger obsession among politicians with de-valuing and working against unglamorous jobs that involve "dirty" work.