I think we need to stop using the word socialism completely and talk about quantity of scale. This is something most everyone understands and relates to. We know that if you buy a case of 24 cans of something that the individual cost per can is reduced. It’s why Big Box stores have lower prices than small shops, because as large corporations buying thousands or millions of units they can get them cheaper than someone buying only a few.

Single payer healthcare is simply taking advantage of quantity of scale to provide services, prescription drugs, etc. at reduced costs over a bunch of individual for-profit insurance companies. One entity in charge of highways and infrastructure can do the job less expensively than a bunch of individual contractors. Ditto most anything that we need collectively.

It’s just… wait for it… capitalism.