I also don't know how to research this, maybe you've seen it, but would the effectiveness of these vaccines , as far as how long they are effective, depend on a greater percentage of the population who take them? Didn't polio eventually get eradicated because enough children got vaccinated that there was no one left to get it?
my guess is that we won't even try to eradicate this virus, but yeah, if we were to try, we would need to vaccinate a large percentage of the world's population (and we would need a vaccine that prevents most recipients from ever becoming infectious, as of now we don't know if the vaccines prevent people from becoming infectious or if they still develop a less severe infection and still have a period where they are capable of infecting others).
i don't have a good link for any of this, just synthesizing what i've seen people tweet.