I'd just like to point out that when you say the "US medical system" you're talking about a large area. It's not like a country like Italy which is smaller than the state of California but 30% more people. The US is far more spread apart and while that doesn't mean it will be better here, it does mean that you can't think about the US just like a single country. Same with China, too.
A bed in Maine does no good if the patient is in LA and the doctor is in North Dakota.
But yes, we now know it's already too late. The US has failed to contain the disease like China, Hong Kong, Taiwan etc did, and the CDC already expects most of the U.S. population will be exposed to this virus eventually. There's no precedent yet for a COVID-19 epidemic of this size -- China has successfully contained it, and Italy's population is just 1/5 of the US.
But on the other hand, we as average people can still do our part and meaningfully contribute to flattening the curve. Even one unnecessary death avoided is a win.
Too little, too late. This type of regulation made sense 2 weeks ago, combined with a halting of all international travel and an advisory against interstate travel.
The virus got out of control though. We don't know how many are infected, but we know our ground zero is 10-100x worse than the ground zero of nations that managed to get things under control.
People need to brace for impact. The US medical system is going to be overwhelmed by people in critical condition. The government has been too slow to respond.