Here is the thing: The above definition of liberals you give makes sense. I don't agree with it, but it makes sense. Many leftwings say the exact same thing (sorry to bring it to you, but a ton of leftwings are anti-globalist because they are anti-bank and anti-corporations and anti-multinationals).
However look at the words you used and their meaning.
The Oligarchy you talk about is Oligarchy1: Banks, liberals (the classic liberal definition), neoliberals, globalists, multinationals, Western world Billionaires etc. Throw in Soros and stuff if you want.
That is not the only Oligarchy!
Putin's Oligarchy is Oligarchy2: Nationalists, Raw-resources multinationals,
Eastern Europe / Caucasus Billionaires, Mobster-turned-oligarchs, European Anti-Americanism,
isolationists etc.
There's also Oligarchy3: Chinese Communist Party, Anarchocapitalists, Raw-resources multinationals #2, Asian and African Chinese-sphere warlords, Asian Anti-Americanism etc.
And of course, there's Oligarchy4: Saudi Sheiks, UAE emirs, South-Asian Sunnis, Oil-rich muslims, Islamic extremism puppet-masters, Middle East Sunni warlords etc.
(Important note: I don't agree with the terms laid out above. For starters, unlike leftwings and far-rights, I don't consider the Western World to be in the grabs of a few hundred evil, profit-oriented billionaires and bankers - but that's the terms often used when they are grouped together as "the evil EU!" or "the fascist USA!" etc).
NOW... Oligarchy1 is top at the time. Oligarchy4 is making a comeback after Bush2 hit them at the behest of Oligarchy1.
Oligarchy4 is currently partially allied with Oligarchy1 but not completely of course. A lot of oil money get to anti-Oligarchy1 and anti-Oligarchy3 extremist organizations and they use their oil muscle to hit Oligarchy2 hard.
Oligarchy2, Putin's Oligarchy, is currently in a weird dance with Oligarchy3. They have conflicting interests in some areas but aligning interests in others.
But to call Putin a centrist Liberal = putting him in Oligarchy1.
That, aside of completely not true (he's neither centrist nor liberal in any sense)
is also confusing for people that really try to understand your posts! Simply put,
you speak a different language than the people you try to discuss with.