That's absolutely false. For example, I buy a brand medication in Europe without insurance for price many times lower than the generic drug in the State's copay! There numerous examples, but most recent example is my wife's Levothyroxine. I buy a German-made medication for $1 in Bulgaria. In the States, a generic version made by noname Indian company has a $10 copay. Same with the Metformin I buy. The original brand medication (Glucophage) I get at around $2/month supply. And this is just meds.
The most advanced MRI in Bulgaria costs without insurance cost a fraction of the copay in the States.
Same for labs. I recently got a comprehensive labs including advanced lipid profile (with lipoprotein(A) and ApoB, cholesterol fractions, etc.) for less than $20 out of pocket with no insurance. Same with my wife's thyroid test - full picture, not just TSH for less than $15. All self-ordered by the way! No need for intermediary companies to authorize it - you just go directly to a lab, which keeps the costs low as there's fierce competition for your business unlike in America where Labcorp and Quest keep the prices ultrahigh!
An quantified American (by Abbott) COVID-19 IgM + IgG antibody test in Bulgaria was less than $20 - here a yes/no test starts at $75.
Again, I'm talking about paying pure cost plus hefty private companies' margins here - no subsidy, no insurance, all up-to-date technology and materials.
The margins in America are unimaginable for any humane organization anywhere in the world. Healthcare should never be a business!