Some economic systems are fully or partially socialized, even in America. For example, our education system is partially socialized. In other countries, education is even more thoroughly socialized. What does that mean?
One thing it doesn’t mean is that the education is free. Public education isn’t free. The teachers, administrators and staff at schools are not providing their services pro bono. They are paid for what they do. But they are paid by some body of the public at large, rather than the individual student/customer who seeks the education that is provided. And correspondingly, the amount of education the student is entitled to access is based on something other than the ability to pay. That’s what it means to have socialized education.