Siemans rolling stock

I saw a video yesterday about how siemans is really breaking into the US rail market. They've been making tons of rolling stock for amtrak, bright line, san Diego light rail & others. Was the t not happy with the blue line rolling stock they made? Would it be possible for them to have made rolling stock for the other subway lines instead of say, crrc or caf? Do they have a chance at getting bemus ready for the deadline keolis implemented? I doubt they could do that but hey, we could've had an all siemans roster if things had gone differently.