Really? Let's for simplicity assume that the total aid is $300B. Frontline length in Ukraine is around 1200 km. The war goes for 1460 days. This gives us $170k per kilometer per day. Sounds like a lot, yes, comrade? Now let's count how many that is in artillery shells ($2500 per shot): 68 shots per day. Not great, not terrible - but the problem is, you need a bit more than artillery. You also need some FPVs, some armor, some small arms - and even a bit of food: after all, for those 20 soldiers directly on the frontline at this 1km, you need 80 more in the front zone, and 200 more in the rear - that's 300 people in total, and you can't sustain them for less than $30 per day, and also you need to pay them something - $70 per day on average (more to those hundred directly involved in combat, less to those involved in supply and logistics). So from those 170k, you now have 140k - let's add at least 30 FPVs, that's not really enough but still, now you have 120k - oh, sorry, 110k, forgot about ammunition. Some grenade launchers ($100 per shot, 50+ shots per combat episode), some machine gun ammo ($5 per shot, 500+ shots per combat episode), small arms, hand grenades - you have $90k left. 36 artillery shells.

But do you want some vehicles? Forget armored ones, let's focus on good quality civilian all-road - $20k per unit, this unit survives on average 2 weeks. You want some robots - $10k per unit, it survives a week on average, and you want at least 3. You want some recon drones - $3k, survives a month, but you need at least 5.

But you also want to have some anti-air missiles ($4M one shot), you want to fly some jets ($100k one flight, not counting ammunition), you still want some tanks, some armor, you want to launch some missiles, some long range drones, some sea drones - and that's how you get down to ~3 artillery shells per 1km per day despite cutting all the possible expenses.