After everyone with more than two brains cells to rub together are fully vaccinated
Most people have always been safe from covid. 95%+, maybe 99%+. In particular the young as your risk goes up x2 every 6 years older you are. So thats more than x1000 more risk old than young. And then only 0.1% have died in any one outbreak, bearing in mind we are now into the second season of covid and it is an annually recurring disease. It will naturally die out, hard to tell where we are on that sans any vaccines at all.
Had we nothing whatver about covid it would be over by now and there would have been minimal economic impact, because it mostly affects pensioners. Not saying that is what we should have done, just observing the economic impact is entirely because of our intervention. Intervention has also made this last longer, which has caused its own deaths. Deaths because of poverty now and in the future, death because it has crowded out other medical treatment, deaths because the longer it goes on , the more high risk people who could have survived by shielding had a longer and longer time in which something would happen and they catch it.
Hospitals and care homes have been a hotbed of infecting new people, especially those already old or sick so they are at big risk.
We know something like 30-50% of people had functinal immunity which worked against covid before it began. Probably not perfect, but enough to reduce its impact. by now a lot more are already immune from catching it. Impossible to tell how many, because we have no idea how many people have had it already from testing which has always been too little too late (and still is), because no one has done proper mass antibody testing, because we generate more t cell immunity than antibody but that cannot be mass tested at all.
It seems likely the first wave died out because enough people became immune to it. Now covid has mutated and come round again. Partly because it has changed, and partly because immunity fades fast. the nature of it, breathed in, straight into lung cells, breathed out, means it is a moving target for the immune system. This is likely why we will not eradicate it, so dont think we will.