Right... it’s a one way descent. Does it need to go back up in altitude if you have three more behind it? Ten more? So, “physics.”
My larger point, which I am poorly communicating, is don’t discount the possibility of masses of cheap, expendable, unmanned vehicles of all shapes and sizes showing up in the near future battlespace. When you take the human and human-supporting features out of the product design, you can radically change the design and make something pretty damn lethal in the aggregate
. Just because the US military isn’t doing it today doesn’t mean adversaries won’t. If a manned aircraft is facing an AI-piloted air superiority fighter in 2040, the unmanned airframe won’t look like a QF-16. It’s going to be a lot lighter weight, longer endurance, fewer/no countermeasures (ECM, chaff, flares). Less redundancy of wiring/lines built into its internals. No martin baker. Heck, maybe no landing gear (ScanEagle doesn’t have any either). You can get a lot of lethality when you rethink an air superiority drone from the ground up. And yeah, you can certainly trade altitude for airspeed fifty times in a row if you have fifty drones up there and they each do it once. Those fifty drones may not get many kills against a pointy nose manned aircraft but maybe the adversary only needs them to go after our AWACS, tankers, P-8s, RC-130s, AC-130s, and other big wings.