Douglas Macgregor's current analysis of Ukraine...thought-provoking
I'd watch the first 6-7 minutes. Thought-provoking and likely on target. As for whether American donors or big business has an interest in promoting the war is anyone's guess.
I'll only point out that this nation spends almost $1 trillion per year on defense which is certainly lucrative some. Do those folks lobby congress? No, of course not.