A very large portion of R&D costs for drugs are in doing phase 3 clinical trials. These will always be expensive because you have to recruit and closely monitor several thousand people with a relevant condition to determine if a treatment is better than existing alternatives and what sort of side effects a medication has. Many drugs which were developed by academia using federal dollars and which passed phase 1 and 2 trials fail phase 3. Pretty much every phase 3 trial is paid for by private industry.

If you're going to make such a conspiratorial claim, then the onus is on you to provide the proof.

I think the answer is probably a little bit more grey FYI.