The incentive is created through public funding approved by the body of the electorate. People can still make money in a socialist system and it can be used to creative incentives. Instead of that funding given to those who are simply looking to maximize their profits to maintain social and material position, it’s given to those who hold collective concerns in mind. Like prioritizing funding of alternatives to fossils fuels and animal agriculture, versus capitalists who only want to profit at the expense of overall suffering and deterioration of the planet.

When you only reward people’s greed and shallow materialistic desires, it’s a detriment to humanity overall. People prioritize their selfishs interest over the good of the collective. Capitalism is the modus operandi of spoiled adult children who hate doing the right thing and tantrum when they’re denied instant gratification from their favorite toys.