We don't know that, as weird as that sounds. We have no idea if there's significant or lasting immunity from having it, whether it's seasonal like the flu, or what the longterm behavior of the virus and it's likelihood to evolve is.
Which makes having longterm plans very difficult because we don't know what we should be planning for.
There's still areas all over the world which have not been hit too badly solely by luck - for instance, here in Alberta Calgary has been hit with an order of magnitude more cases than Edmonton without a great reason why. Regardless of the potential of immunity, these lightly hit areas are still open for initial infection and community outbreaks. I can't see why they wouldn't occur - on a long enough timeline luck just runs out.
We don't know that, as weird as that sounds. We have no idea if there's significant or lasting immunity from having it, whether it's seasonal like the flu, or what the longterm behavior of the virus and it's likelihood to evolve is.
Which makes having longterm plans very difficult because we don't know what we should be planning for.