Just what percentage of people who “get this” NEED a stay in the ICU? I’d wager that it is very, very small.
The issue isn't the percentage of those who get this; it's the absolute number of those who need advanced medical care, compared to the number of hospital beds available.
One of the issues is the need for airborne containment in the hospital, negative pressure rooms; there are only so many of those to go around.
Once the hospital capacity gets swamped, then one gets into triage of patients by age, co-morbidity, obesity, etc.
South Korea, Singapore, Hong Kong, and Japan, seem to have kept this from running out of control. But I think that was due to aggressive testing / quarantine at the earliest stages.
Italy has hundreds of thousands of Chinese working in the garment industry, who went home for Chinese New Year and brought it back.
The US is between those two responses -- Trump stopped flights from China over a month ago, but only on US-flagged carriers. Apparently we're still getting over 1,000 people/day from China.
And then there's the little matter of Turdeau in Canada allowing all flights from China. We might need to build a SECOND wall besides the one bordering Mexico...