The US didn’t have any form of socialised health care and massive health care system cost overruns. Other industrialised countries had socialised health care and kept their health care costs down as a result.
Now the US is beginning to implement legislation that socialises the health care system and – wait for it – health care costs are dropping.
The only thing surprising about that is that people are surprised about that. Keeping health care costs down is precisely why countries socialise health care in the first place.