DARPA wants to accomplish its goal without air superiority. DARPA wants to use a combination of overwhelming performance (e.g. hypersonics) and overwhelming numbers (e.g. swarming low-cost weapons).
They want to shift from expensive systems like F35 to lots of inexpensive drones.
In order to win in a world of inexpensive drone swarms that means the US will need to get cheaper than China’s production and be able to out-build China.
On the ground, DARPA wants Starship Trooper-like exoskeleton armor.