Rx shortages have now become the norm:
At the Henry Ford Hospital in Detroit, pharmacists are using old-fashioned paper spreadsheets to track their stock of drugs in short supply - a task that takes several hours each day.
Self funded employers should come together and partner with Wal Mart or a mail order facility and form a non-profit, US-based generic pharmaceutical company. This way they can guarantee themselves an affordable supply of generic medications. With a guaranteed market they could have consistent supply runs.
Once that is established then they can aggressively start challenging patents. Instead of the current games of exclusive 6 month periods at inflated prices and years in court with BS legal arguments once a patent expires, they file to make the drug; if the brand manufacturer challenges, then they all exclude the drug from coverage.