Because it's not America with Vietnam/ Iraq war mindset.

Helicopters are extremely vulnerable for drone interceptors. With Recent developments, the an interceptor can fly up to 600 km/h. It can also wait for you on the balloon.

Overall, piloted aviation, it's almost a dead end with all the recent capabilities.

Piloted aviation is still very much alive. US and Israeli 5th generation aircraft took minimal losses in the recent strikes on Iran despite some fairly capable defenses. Drone capabilities will continue to improve but for now the autonomous flight control software is incapable of complex, dynamic missions and remote piloting doesn't work in a hostile EW environment. We'll increasingly see manned/unmanned teaming with the drones pushing forward while the manned aircraft trail behind, but close enough to exercise tight control.

>Helicopters are extremely vulnerable for drone interceptors.

Do we have evidence even a single helicopter has been shot down by a drone?