Also I don't think the global economy can afford 5 year lockdown, it will cause starvation among with other cause of death, which might end up 'killing' more than covid-19
Could you explain what kind of lockdown model you are thinking of that would prohibit production or distribution of food?
It's already surprising how much of the activity turned out to be "non-essential". And we can have oil at half-price to do the essential. :D
Worldwide, that's not to be taken for granted. Here in Russia, the police is sometimes stopping agricultural workers from planting their crops because of the lockdowns. (Source in Russian: https://www.kommersant.ru/doc/4311038)