Why is Pfizer always mentioned in the news when it is BioNTech and Pfizer is "just" a partner? Just as the Chinese drugmaker Fosun is. Sure credit goes to both but this "Dream Team" is BioNTech.
Similar to the reason why most small biotechs don’t get credit when a big pharma company launches their drug - coming up with a drug candidate is critical and really hard, but it gets you about 1/3rd of the way to the market (at least as measured by dollars). Taking it through clinical trials, regulatory approval and manufacturing is a complex (and massively expensive) process that requires expertise typically only big pharma has (not to say smaller company don't roll their own, they do, but they are often slower and sometimes stumble).
And this is to not downplay BioNTech's role. Proving that your idea works in biotech takes some massive cohones. No doubt they took a ton of shit on their way to this point.