Honestly? Probably because glock either hasn't entered the "bidding" process or doesn't give a good enough deal.
If it was me making the decision, I'm never having a glock in my house. They're uncomfortable, and sloppy. Yeah, sure they always shoot, but I can fork up a little more money and get a gun that not only always shoots, but is comfortable and durable as well. The mile wide machining in glock is what makes them always shoot, and also cheap. Tight correctly fitted tolerances take skilled machinists, while the Austrians are using who knows who to produce their parts... But that's my opinion...
If it was me making the decision, I'm never having a glock in my house. They're uncomfortable, and sloppy. Yeah, sure they always shoot, but I can fork up a little more money and get a gun that not only always shoots, but is comfortable and durable as well. The mile wide machining in glock is what makes them always shoot, and also cheap. Tight correctly fitted tolerances take skilled machinists, while the Austrians are using who knows who to produce their parts... But that's my opinion...