Yeah, but a lot of the west doesn’t really care about Ukraine.
Strategically? Sure. But they don’t really care about the people, nation, or heritage of Ukraine.

The goal here is to drag this out and learn what can be learned from Russia and their allies prosecution of the war.
A no-fly zone, enough air defenses to stop the missiles and drones, and enough artillery to turn back the meatiest meat grinder approach at the very outset of the war would have closed the door on Russia.
Russia wouldn’t still try to commit planes if they had 100% loss rate in the early days. But a smaller loss rate over a longer time will drain their resources more, because they’ll keep trying to send planes. The West wouldn’t have considered drones as heavily in their next set of war plans, nor would they have real world testing of jamming, counter jamming, jamming defeat measures, and other strategies to defeat or succeed with drones. If Russia faced an impenetrable wall, they wouldn’t be standing at a half million dead soldiers and the foment that will cause as their demographic crisis worsens. They would have cried ‘no fair’ in the early days and locked down what they could lock down, or retreated fully.

I know the U.S. is a clown show, but it would have found other reasons to self-limit its commitment of help. The goal is to bleed Russia dry, allow Ukraine to become dependent on western military tech, and when the war ends, assuming it ends in roughly the same place it began, the west’s financial institutions will be very happy to lend capital to Ukraine for rebuilding, and western businesses will be happy to spin up factories that will take advantage of economic issues and their own burgeoning demographic problems to underpay workers for goods that can be sold in the west.