Why are US helicopter manufacturers  

Airbus and Leonardo continually introduce new aircraft and sell boat loads of them. All we've gotten from Bell, MD and Sikorsky in the last 10 years are the 206 retread, the failure S76D and nothing at all from MD. The 525 was introduced almost 10 years ago and is still not even certified. I don't get it. Please don't embarrass yourself by telling me "government regulation" because Europe. The 429 is the only decent aircraft produced this century in the US and they even managed to screw that up with the gross weight debacle. I don't consider tin foil Robinsons as helicopters.