Most of the world has not been vaccinated, and will not be vaccinated for another 3 or 4 years, potentially. So it's been a complete failure. His idea that you could manage production and distribution through this buyer's club that leaves the companies with the power and the IP has been a complete, 100% undebateable failure. The development of the vaccines had nothing to do with the private sector that he's left in control.
Journalist Alexander Zaitchik on Bill Gates's influence over the global development and deployment of COVID-19 vaccines, his long career(s) weilding intellectual property rights against the public interest, and his article How Bill Gates Impeded Global Access to Covid Vaccines for The New Republic.