Definitely true but possible? I doubt it, as there would be a % of people who ignored it and a % of essential services (police, etc.) that would keep working.
Yes, this is definitely right - I asked the doctor on the novavax trial that I and several others are on and the rate of approval essentially will depend on the amount of coronavirus knocking around. The more there is the quicker they'll be able to prove the efficacy.
Obviously they are still...
Yes the mutation is random but Thunder Bolt is right they usually weaken as by not killing their host they are able to spread more easily. If they mutate to spread less easily then they won't out compete the existing strains .