Capitalism is the most useful economic system, but if you don't regulate it, you just end up in the Gilded Age. You have to be able to yank the choke chain, because corporations can't be trusted to behave right. It's disingenuous to phrase that as the government picking "winners and losers", the purpose of the market economy is to serve the well-being of the people and it must be forced to whether it wants to or not. That's why America's economy was strongest when our top marginal rate was over 90%, it's why monopolies are illegal, and it's why you aren't allowed to pay your employees in Pullman Dollars. The idea of the unregulated capitalist economy being able to do the most good is as naïve a pipe dream as the idea of a fully centrally-planned economy ever working.