Who else will buy your labour?
The person that buys your labor is consumer, and capitalist is skimming value off for himself. Capitalist doesn't help, he exploits.
These things are then sold to customers. A building is a good example. A capitalistspays for contractors. Contractors pay for labourers. A customer buys the finished building.
That is not how things work. Not many people make complete things themselves. Instead people sell their labour to a capitalist. The labour is coordinated to make finished things.
