why the U.S. struggles to regulate prescription drug prices??

why prescription drug costs are high in the U.S

1. **Lack of Price Regulation**
2. **Patents and Exclusivity**
3. **High Research and Development (R&D) Costs**
4. **Marketing and Administrative Costs**
5. **Lack of Generic Alternatives**
6. **Pharmacy Benefit Managers (PBMs)**
7. **Insurance and Co-Pays**
8. **International Price Disparities**
9. **Legislative and Policy Barriers**
10. **Economic Incentives**