Prediction:

1. 30 countries will move toward this within the next 5 years.

2. It won’t even enter American political discourse for 5, 10 or 15 years from now.

3. If it’s proposed it will incite a moral panic, as the usual suspects raise the alarm about the specter of communism, a lazy labor force, etc.

4. Measures of lifespan, health-span and well-being will increase in the countries that adopt it.  These same measures will fall in the U.S. and virtually no one will notice.

5. The usual rhetoric about American exceptionalism and USA #1 will carry on as usual.

I would say your prediction is dead-on.