When this is all sorted out and we have the spare test kits and a couple years to monitor COVID-19, we're going to find that infected virtually everyone and it has a mortality rate close to the common flu of about 0.1%.
In addition, and we'll find this out a lot sooner than later, we will find that all this economy killing stuff: the self-quarantining, social-distancing, school closings, restaurant closings, daycare closings.... we're going to find that it didn't do anything to "flatten the curve" in any substantial manner.
So we are currently killing our economy and reducing our ability to respond to the impending needs for a snake-oil cure that apparently nearly every world leader has purchased.
Unfortunately I don't think anyone will ever be able to prove #2 one way or the other, but I'm sure it will be the subject of much debate.
As for #1, I don't think that will take years, probably only months until there is an anti-body test which will tell us who has actually been infected at any point. Then they'll be able to get an accurate picture of how many people have actually been infected and calculate an accurate mortality rate.