Free health care in Spain

During my recent trip to Europe, we took a tour in Spain. During that tour, we passed a private medical clinic. The tour guide pointed it out, and then said that one of the best things about living in Spain was the "free health clinics." He then said that there were private clinics that people must pay for, but almost no one did so, because they were so expensive that only the rich could afford them, and the best doctors and care were in the free clinics, anyway.

I asked him why the rich would pay for inferior care, and he had no answer.

To me, the fact that the rich can pay for care in for profit clinics tells me that the care there must be better than the free clinics, or else they would go out of business.