To be fair, Johnson & Johnson (a US company) also made a similar pledge to AstraZeneca.
These two companies have collectively received more than $1.5 billion from the US government [1]. As I understand it, Pfizer have not taken any federal funding. They do have government purchase agreements, but they are dependent on Pfizer delivering a viable vaccine. Their partner BioNTech received German government funding:
Berlin gave the German company $445 million in an agreement in September to help accelerate the vaccine by building out manufacturing and development capacity in its home market. [2]
These two companies have collectively received more than $1.5 billion from the US government [1]. As I understand it, Pfizer have not taken any federal funding. They do have government purchase agreements, but they are dependent on Pfizer delivering a viable vaccine. Their partner BioNTech received German government funding:
Berlin gave the German company $445 million in an agreement in September to help accelerate the vaccine by building out manufacturing and development capacity in its home market. [2]
[1] https://www.nytimes.com/2020/05/21/health/coronavirus-vaccin...
[2] https://www.bloomberg.com/news/articles/2020-11-09/pfizer-va...