Why do buyers and sellers voluntarily work together?

The principle of voluntary exchange is based on consumers and producers acting in their self-interest. A voluntary exchange between a consumer and a producer makes both parties better off than they were before the exchange. For example: Both parties, you and the consumers, are better off because of the exchange.

Sellers need buyers to make a profit. If sellers create goods and services that the buyer will need or want, they will buy it resulting in profit for the seller.

there is no possible way mgk stands a chance with the greatest white rapper of all time. eminem killshots had more bars than rap devil and the reason mgk is doing all this is cause he not getting attention anymore til the release of rap devil and the disses he is putting on eminem. now rap devil was more fire than killshot so mgk might won the battle with rap devil but eminem won the war with killshot.