Presumably because it wasn’t worth getting the hardware to produce it at the price it was being produced at. Raise the price to $750 and a generic competitor would make sense except that after you’ve spend millions of dollars getting set up they can realize the error in their ways, reduce the price to $1.50 a pill until you go out of business, and then suddenly decide $750 is a good price again.
At least that’s what I’d be thinking if I were contemplating getting into this. It’s possible that kind of behaviour is illegal, but good luck with that.
The approval for a generic drug under EU legislation can cost up to 1 million Euros for the needed bioequivalency trials and is a lenghty process (6 months to 2 years). I learnt here on BB that the FDA requirements are similar - so don’t hold your breath that we’ll see an alternative soon. [The numbers are out of my head, I read them a few days ago in a progenerika publication, a lobbyist of the generic drug industry. the ballpark seems about right, but I don’t find the link anymore]