Several US hospital chains are joining forces to make generic drugs which have become outrageously expensive, or scarce.

It is not clear in the article whether they will sell to the general public as well. If they don't, the problem will get even worse for everyone else.

I suspect that the problem is the result of the many mergers in the pharma industry. Idealized economics says we can count on competition to do certain jobs, but that doesn't work when companies can merge instead of competing.