The Roman Catholic Church has been critical of capitalism since before “capitalism” was a word.
This is old news. I learned it as a college undergraduate in the 1950s when I was studying economic history.
The criticism of Catholic social teaching back then was not that it was radical or Marxist. It was that it was out-of-date.
The Roman Catholic Church teaches that you should put the common good above your personal self-interest. Supporters of the free market claim that if people are free to pursue their own interests, the law of supply and demand will produce a result that is best for everyone.
The medieval Catholic philosophers taught that people in business should charge no more than a “just price”—that is, enough to cover their expenses and provide a profit sufficient to live on. Supporters of the free market claim that if prices are allowed to rise and fall, the law of supply and demand will direct production to where it is most needed.
The Roman Catholic Church historically has opposed “usury”—the charging of excessive interest rates. Supporters of the free market say that if you limit the return on investment, you will stifle economic growth.