> It’s interesting that the U.S. picked an employer-driven model...
Health insurance, parental leave† and retirement are also employer-driven. This seems to be a US default that incidentally gives a lot of leverage to employers.
† Yes there are government mandated minimums, but when compared to other developed countries, substantive parental leave is largely left to the generosity of the employer
You wrote "incidentally" but I think you meant "intentionally". There is no evidence it's a coincidence, but there is a great deal of evidence that it is not.