Many Russians won’t get vaccinated against Covid-19. A dog catcher explains why
thebulletin.org
thebulletin.org
https://www.axios.com/cdc-fully-covid-vaccinated-definition-...
https://www.independent.co.uk/travel/news-and-advice/which-c...
Long-lasting protection from antibodies is irrelevant because political authorities are already ignoring natural immunity.
The booster shot isn't the problem per se, its that anyone who doesn't take them will be segregated from society due to vaccine mandates.
You assume the pharmaceutical industry always acts like a cartel and its members aren't in competition with each other: if one of them created a more long-lasting vaccine, it would capture a larger share of the market.
There's your incentive.
All three of those companies know that the two with the best vaccines made billions, the third made a loss.