Irrespective of flavor of socialism, just logically capitalism does not make any lick of sense unless you are among the capital class already who benefits from scraping the barrel of revenue to collect an amount as profit. The fact that there exists a profit margin and businesses cannot operate at cost is why manufacturing in China is used in the west vs western manufacturing, since businesses operating at cost can offer product at cost vs cost*profit_margin so these businesses are always more competitive than western counterparts who have to pay for someone else's profit margin down the entire supply chain.