Gilead arguably has the best science in the business. But success in Biotech / Pharma is reserved for those who keep their customers alive, but milk them forever by not curing them of anything.
Hits against Gilead:
1. Gilead did not make any friends by creating the Gardasil vaccine for HPV, which killed the downstream pipeline for those companies that would have treated HPV for 40-50 years.
2. Gilead does not have deep hooks inside the FDA either
Regeneron on the other hand has deep contacts inside the FDA and also practices the milking-forever business model. If they package dried-prunes as a cure for Covid, FDA will merrily approve it.