Switzerland does have mandated universal health care, so essentially the same result as "Medicare for All". It's just implemented in a different form: mandatory basic insurance + supplemental insurance, instead of a single-payer system. A number of other European countries have something similar.
Agreed. The ACA was a compromise solution meant to move the US closer to a single-payer system, but was later stripped of many of its clauses, making it of much less value (though not rescinded altogether -- thank you, McCain!)