Fact is, we Americans are general ignorant of the beneath sheets influence of our government. We like to think we are the irrevocable good guys. It's shocks and angers many when an informed person dares to say, "No we aren't any different from the bad guys, and sometimes worse." Before I answer your specific question, here are few things most of us are ignorant about.
1. We prohibit tobacco sells to youth in the USA, yet until very recently, and it still goes on in places today, billboard and other ads can be found in poorer minority communities.
2. Related to # 1, the same is true for many Third World countries. Remember the 2 yrs old
kid-smoker? What isn't expounded is how our government allows tobacco companies to market to kids there, but not here.
3. Coca-Cola (Pepsi did the same) helped fund installing and sustaining dictatorships. That was exposed in a US News and World report article back in the late 1970s or early 1980s if I recall right. Try as I might, I couldn't locate this article on the Internet. The closest I could find are:
A.
Coca-Colonization - Atlanta Magazine
B.
7 fascist regimes America enthusiastically supported
C.
The CIA’s Secret Global War Against the Left
Now, regarding your question of
why it was up to the US to give Polish planes to Ukraine due to our financial muscle and financial influence, being the actual boss nation of NATO
, we get to call the shots. Without the USA, NATO is either a joke or nonexistent. So as the Capofamiglia - (Don/Boss)
of that organization, we dictate the marching orders of the members. Right now, we just got out of a 20(?) years long worthless war in Afghanistan (still waging an unofficial one in Iraq and Syria) that cost trillions of dollars. So Americans aren't keen for another war right now, and frankly we can't afford one. Plus, we're losing more money due to COVID and the massive arms shipments to Ukraine, ongoing even now. I think our Erupoean allies closest to the Russian border want to go ahead and provide more meaningful support of Ukraine, but the USA has cold feet. Putin knows this so feels emboldened. Next, watch China take a cue and move on Tiawain.