Sounds convincing but 4 years is still too long for such process of complete eradication of the virus. My guess would be more than 2 years and not more than 3. Though, the lockdown and quarantine will be lifted once the vaccine is already available for public use.
I bet there will be available alternative before the vaccine to at least minimize the spread of the virus like the antibodies.

There were also rumors about the latest cure experimentation being effective on most patients, I'm not just sure if that was true or not. Nevertheless, we are all wishing that this pandemic will end asap.