Here's the CEO of Pfizer explciitly telling a journalist on the record they wanted to stay out of the "politics" of the program, which I think the non-naive reader can tell exactly what that means; they certainly would not announce that the very government they rely upon for drug approvals is "corrupt", they correctly identified that Trump has turned every US program into his own personal quid-pro-quo machine and they wanted no part of it:
> "When you get money from someone that always comes with strings. They want to see how we are going to progress, what type of moves you are going to do. They want reports," he finished. "And also, I wanted to keep Pfizer out of politics, by the way."
Reading your source, it seems the bureaucratic limitation was their #1; then comes politics.
"Pfizer declined the R&D funding in order to "liberate" scientists from bureaucratic limitations as they worked to develop a COVID-19 vaccine, the pharmaceutical company's CEO, Dr. Albert Bourla, said in a September interview with CBS News' Margaret Brennan."
> "When you get money from someone that always comes with strings. They want to see how we are going to progress, what type of moves you are going to do. They want reports," he finished. "And also, I wanted to keep Pfizer out of politics, by the way."
https://www.newsweek.com/pfizer-avoided-rd-funding-trumps-op...