You are almost right. The only recent successes have actually been FMS. There is a difference between FMS and off the shelf.
There is no intent to take development risk - never has been. Hindsight is the vision of arseholes.
You wouldn't be the first person to suggest we should just buy FMS and thereby reduce our risk. The only problem with FMS is that you don't get exactly what you want. MH60R cannot be fitted with floats, for example, and CH-47F has no rotor brake. If we modify those acft, we take development risk, and assume an AW oversight for the life of type.
It's not easy. If it was easy, we would be there by now.
As Edmund Blackadder said "They may go up diddy up up, but they're still gits"