Sleven, your link explains the mechanics of the functioning of PBMS, insurers, pharmacies, Pharma, etc., but unfortunately the title seems a little off. Most of everything out there seems to indicate that PBMs have raised costs.
As North has highlighted they are being sued by the FTC.
NS - thanks for the response and link. I would assume the length of the contract is specific to the parties involved (and any penalties for breaking the contract early). fyi -the few examples that I found were all 1 year in length.
On one of the calls Berg said that they were negotiating with the PBM/Insurer which they lost and that discussions were positive and he was hopeful of getting the business back. I took that to be for 2025.