I should have been more specific, but to be very specific requires a lot of extra words every time. What I've said and meant above is that it's not inevitable that everyone will get the virus before there's a cure or vaccine, if aggressive interventions are taken, like in SK, Taiwan, China, Japan, Australia and many other countries, which have far less cases per capita (all <300 per 1 MM vs. the US and most of Europe who all have >3000 cases per 1MM (and many, like the US with more than 5000 cases per 1MM).
It's all a matter of transmission rates and total time. By keeping case rates very low, these countries obviously keep death rates very low and if they can continue to do so until there's a cure or even a vaccine, then they'll likely have maybe 1/10th to 1/100th the deaths per capita the US will likely have and many of these countries are doing this without lockdowns. Some countries even appear to have snuffed out viral transmissions completely, although that's very, very difficult with international travel (New Zealand used a full lockdown to get to zero new cases for example, while SK/Taiwan and others have very aggressive testing, tracing, isolating systems to snuff out inevitable flare-ups - and they all wear masks).
What I've also said multiple times is that if the US simply "goes back to normal" with zero internventions to slow transmission (and we don't get lucky with the virus weakening or having many with native immunity and don't get a fast cure/vaccine), then case/death rates will go back up and over months to a year or two, depending on population density and travel patterns for the most part, with rural areas reaching herd immunity (55-80% infected, where that number depends on the R0 of the virus which we simply don't know yet) much more slowly than urban areas, and we'll likely see infection fatality rates of 0.5-1.0% (~1% now in NY and Spain, the only large areas with population antibody test results to know this), so multiplying all of that out gives a range of total US deaths from 900K to 2.6MM. (330MM x 0.55-0.80 = 180-264MM infected and then 0.5-1.0% of those dying gives 900K-2.6MM US deaths eventually).
And in theory, every country would reach similar deaths per capita with no interventions, cures, vaccines or getting lucky with immunity/virus weakening, as the virus is the virus and if allowed to it will infect 55-80% and kill 0.5-1.0% of those - those are simply the numbers without any "help." I've also posted that there are a ton of scenarios between, "go back to normal and let folks die" and aggressive intereventions with very low case/death rates and I assume we'll be somewhere in the middle of those two extremes with a fairly slow burn over the next ~6 months with maybe 500-1000 deaths per day (90-180K more deaths on top of our 110K deaths so far).
On the positive side, I really think convalescent plasma and other treatments/improved procedures and finding cases while earlier in disease progression could easily halve death rates and I have pretty good confidence that the engineered antibody approach will be close to a cure for many, greatly reducing deaths by early this fall - and while scaling that up for millions will be hard, we really don't need to - we need to have enough for people who progress to serious enough symptoms that they'd go to a hospital, which is "only" maybe 25,000 patients a week (we've had about 300K hospitalizations in 12 weeks) and we'll have that, so if it's effective, we'll save most of the lives now lost. But until then or some other lucky break happens, I'd far rather take the SK/Taiwan path and save another 100K or more lives over the next 6 months vs. half-assing our inteventions. That's what I would do. Kind of hard to type that all out every time, lol.