Randall Munroe did a small section on eradicating the common cold in his What-if book, the basic idea is if that all of humanity stayed away from each other for a week or two then the common cold would die out as it can't survive outside of the human body for more than a week and normally survives by continuously hopping from host to host.
This current situation had me wondering how hard it would be to coordinate a regular -- maybe not yearly -- global self-isolation for say 2-3 weeks at a time. Aside from the difficulties of getting everyone in the world to agree that the first three weeks of February during a leap year are observed through social distance, it doesn't seem like it would be as bad on a recurring basis as it is during an emergency like…
And the speed with which it spreads in a population that has little immunity against the current strain should be a good indication of how little you'd save.