Bill Gates Won't Share

According to this report, Bill Gates doesn't want to share patented vaccine info:

https://www.salon.com/2021/04/26/bill-gates-says-no-to-sharing-vaccine-formulas-with-global-poor-to-end-pandemic_partner/

While there are several possible reasons for this, one might be to keep the rest of us from seeing exactly what these concoctions are made of and determining whether they are REALLY safe or not.

What do you think? Is it just about greed?