RamscoopRaider
Donor
Wall Street only loses if the US enters the war. Before the US entered Wall Street was, with the exception of JP Morgan, smart enough to only loan to Britain after receiving collateral. Once the US entered the war that restriction went away, but the odds of the CP winning after that point are relatively lowThe Entente was financed by the UK, who in term had to get their money from US bankers. If the Entente loses, the UK loses, and if the UK loses, Wall Street loses.
US loans amounted to ~$2 Billion pre entry and collateralized and ~$8 billion post entry and unsecured. Even if the UK loses they can and will pay the former, it's only the latter that becomes a problem and that is a relatively low probability outcome
In any case I still think that it would be Britain that is the most revanchist
France, while not liking the fact that they lost, the elites at least will understand that they are in no position for a rematch against Germany. And in any case the French historically had no real love of Britain and had a war scare as late as 1898, since the British are likely to come off much better than them I can very easily see the French blaming perfidious Albion for leaving them out to dry and not giving it their all. And of course if Italy ended up in the CP, either from the beginning or a late joining, I can also see hate being directed at "Italian Vultures", as Italy is a foe France can beat. There is also the fact that the most Revanchist politicians are probably the ones who get scapegoated for being the idiots who backed Russia in the July Crisis so are out the door. So I don't really see France being more than mildly revanchist against Germany (IE they'd kick the Germans when they were down, but only if the Germans were already beaten by someone else)
Russia is quite liable to hate Germany. At the same time however there is almost certainly going to be a civil war in Russia, as well as revolts against the winner of that civil war and troublesome minorities. The Reds if they win would probably want to blame the bourgeois and have a show of proletarian solidarity, anyone else is liable to blame the minorities (Poles, Balts, Finns, Ukrainians, Caucasians, Jews...) before the Germans. Russia also has its trouble in the far east to consider. So while Russia would still be revanchist against Germany, they have a lot of other commitments and would have a lot of other people to spread the hate around
Britain on the other hand has no other enemies, historic or current to really blame or focus on aside from Germany, though the Irish will likely get scapegoated. They have the resources to fight Germany as Germany cannot enforce harsh terms on the UK. They also haven't really lost a major war since 1781, unlike the Russians (1905) or French (1871) so are much more likely to take a defeat badly. So Britain is most likely to react badly to losing as they are not used to it, is most able to be revanchist and doesn't have many distractions