Lest we forget (a few points),
Zelensky was a wealthy man before the war. He was a successful entertainer, and he and his wife were head of a media empire in Ukraine. I doubt he is 'getting rich' off the war, and would want to see evidence of that. Not ginned up internet BS, but something that could be scrutinized and not a web-based rabbit hole full of punji sticks.
Putin was virtually encouraged to perform a 'border incursion' by Biden, and further encouraged by the Afghanistan 'withdrawal' indicating the level of military competence from the Biden Administration.
Biden pardoned his whole family, who have enough LLCs to sink Guam, or at least divvy it up and hide it, and likely used some of them to shuffle funds and get wealthy. I would look very close to home first. That lot all got preemptive pardons, and there had to be a reason for those.
Many of the weapons shipped early on were from US stocks and getting close to their use-by dates. It is likely these were shipped at today's prices, despite some dating back to Vietnam.
If anything, money was made off of weapons contracts to replace that stock with new materiel (for us), provided that even happened. It is just more obvious that the Russians were drawing on Soviet era stocks of weapons. Restrictions even guaranteed older weapons would be used by Ukraine first, rather than set aside for more modern equipment, something sidestepped in no small way by Ukraine's use of drones.
The region Russia grabbed had much of Ukraine's heavy industry, uranium mining, steel production (they were selling armor grade steel to the Russians prior to the war). In addition, nearly ninety percent of Ukraine's oil and gas production is located in that part of the country as well, and missile factories were sited there, too. Putin is after resources and manufacturing capability, and while much of the manufacturing has been damaged or destroyed, the resources remain. The push toward Odessa would have landlocked Ukraine, essentially ensuring their grain exports would have to travel through Russia. For any Remembering the Holodomor, that just would not do.
At any point, Russia could have ended this war, by withdrawing to previous boundaries and ceasing hostilities. They started it, after all.
Ukraine had given up their nukes in exchange for a pledge they would be defended and not seek NATO membership. Instead Crimea was infiltrated and stolen in a bogus election (same tactic was tried in the Donbass). This time Ukraine said 'No.' Biden looked the other way, and Putin invaded.
Whatever happens there will cost the US money. If the invasion, creeping empire gambit, a bite here, a bite there, isn't stopped, Russia ends up with all those resources, and at some point, after the Sudetenland, Czechoslovakia, half of Poland...the question becomes one of where it stops. Now is a good time, Ukraine is a good place, and their troops are doing the fighting. We have seen novel techniques and tactics that have caused us to reevaluate our own methodology and weapons without our troops being involved directly.
Either we help them now or pay more in a different venue later, because appeasement has traditionally led to disaster.
To reiterate, Putin can stop this any time, by withdrawing to pre-conflict bordrers and ceasing hostilities.