The incentive here would be that a new company could sell far more fridges when reasonably prices compared to their competitors and take all of their market share
But yes of course govt regulation is required when there is actual price fixing going on. I'd also like to know the alternative way of pricing goods/services from people with the alternate view
You're probably describing capitalism with social welfare/safety nets. Whereas often socialism is considered to be specifically not capitalism and may not allow for the idea of working to get more resources
Fundamentally you're probably happy with capitalism in terms of economy but want further govt regulation/welfare. Which I think is probably the best system we have