That is an excellent point! The totally 'unregulated' free market is fundamentally based on the idea of the 'agile workers', the ones who would move from one employment to another and acquire new skills fairly quickly. But the reality is that concept has limited applications. That's why we need some balance. We shouldn't let the extremes of either way (right or left) to rule the country. And especially we shouldn't let those who need blood for their social experiments to rule the country. Regardless of how passionate they are in their desire to hang the wrong guys.
The "social justice" deals with the problem of slicing the pie more equally, but the Western-style capitalism deals [most of the time] with how to create a larger pie. But, there should be some limits and stoppers on that process to make it more humane.