No they are not!
In a capitalist system I make a product. I take the risk of putting my resources into the product. I make a good product and a perceived good price and I succeed.
In a socialist system the government makes all the products. The is no reward or incentive for me to improve or do a better job. Further if the product is shoddy or perceived of as too expensive (i.e. poor value) I have no choice. There is only one source!