Right. The ones that kill off their host quickly will disappear. With the SARS virus, it’s no surprise that killing 10 percent of its host, it wasn’t able to establish itself as a pandemic virus on this planet."
I don't think the 10% virulence is the reason (or the only reason) that SARS didn't make it to pandemic scale, I think it was everyone working against it and succeeding that time, which of course had the result of people thinking "hah, see it wasn't a problem, all those eggheads overreacting"
on edit: I think my main irritation is with the governments that did not put the proper preparation in the health systems (enough ICU preparation for example) for what was a foreseeable event.
You're right, after you kill that host you won't go anywhere but you will go lots of places that two months prior.
What makes COVID-19 so dangerous is the incubation period + infectiousness, not the mortality rate.