We've heard about flattening the curve but I think there's a different curve at play here:
(Not my work)
Most viruses exist on this curve. The deadlier they are, the harder they are to catch. The more infectious, the less dangerous. The common cold is nearly literally impossible to avoid but carries an almost negligible mortality. The recent ebola outbreak had a massive mortality rate but ended at just over 28,000 cases world wide, a number the coronavirus has soared past.
It mutated in such a way that it found itself off the curve. That's why things are the way they are. We got really unlucky. The good news is, it's going to mutate again eventually, and it's extremely likely that this mutation will make it weaker.