There is no perfect plan, but we have to restart sooner or later. We should weigh all the risks, but we can’t wait to eliminate every risk. Some people will die, but nothing like an uncoordinated effort. Over 2 million people die in the US every year due to various illnesses and accidents (excluding old age) and we accept that without much thought. As usual, we can’t let the perfect be the enemy of the good. Some people will go back too soon, some people will choose to stay away (long) after we’re allowed.
And some businesses may be forever changed, e.g. large concerts, festivals, sporting events, weddings and funerals, restaurants and bars, museums and galleries, hair and nails, YMCAs and fitness clubs, movies and theater, air travel and hotels - anything that involves crowds of strangers and/or communal use without extensive verifiable cleaning. I think the latter has been more common in Asia, and will become more common in the West now.