This is certainly a critical condition - necessary, but we may disagree about suffiicient.
The thing is, even if there's adequate hospital space, enough ventilators... people will die. People who get ill enough to require ventilators will die at a high rate. Yes, in NYC, the death rate was increased by the insufficiency of beds and incubators - but nationally and worldwide, if the patient gets to the point of needing ventilation, the survival rate is not good.
So... Perhaps we say, open sole proprietorships - if the proprietor wants to take the risks, and his customers do too, maybe that's OK.
But businesses with employees? Employees who will be pressured to come to work, to take the risks, whether they want to, or not? In a society that is indifferent to the economic pressure that these people will be under (e.g., take the risk, or lose your home, or don't eat, etc.)? Do we want to go there? Do we want greedy business owners essentially extorting their employees to come to work, at risk of being infected?
White collar workers, who will likely be able to work remotely, from their self-isolation, will be fine. Businesses that employ only such workers, and who are enlightened enough to allow them to work remotely (essentially ALL the time)... sure, they can open.
But restaurants? Restaurants owned by corporations (e.g, not chef-owned 4-star places) that pressure wait staff to come work for $2.10/hour, and risk a deadly infection? It's bad enough that we allow such establishments to exist in the absence of COVID-19, so that the rest of us can enjoy an inexpensive restaurant meal and provide a measly tip. But in a COVID-19 environment?
Casual air travel? Only if you're an idiot, or have a death wish or something.
We've seen what has been happening in more essential food processing plants - the meat-packing hotspots. Can these places really re-tool to provide enough space to protect their workers? Even if they could, will they (given that retooling costs money, and we're leaving this to "the market")?
I have two sons who work in shipping/logistics - they're still working, and the facility has made efforts to protect them - gloves, masks, temperature checks, enforced distancing. But they're still at risk; they interact with delivery drivers, and complete distancing is impossible. But it's an essential business (it is, given the range of things they ship). They define it as an acceptable risk - but to provide entertainment?
Is the Trump administration talking about encouraging people to go on cruises, too?