It depends on by what metric you define what is optimal.

For the health system or public transport the nash equilibrium of offer and demand is not what feels optimal to most people.

For manufacturing s.th. like screws, nails or hammers; I really can't see what should be wrong with it.

I don't know if you are being sarcastic. But no, it's not an "utopia" by any means and the free market still has many pitfalls and problems that I described. However, is the best system we have to coordinate the production, distribution and purchasing of services and goods on a mass scale.