(Setting aside just how much I dislike the use of the word "war" for something like this, not because I'm so ****ing PC, but because as a descriptive word it's poor, bordering on useless)
Arguably it's a war the poor have always lost in the end.
Historically it's not always been a war the rich have always won though, at least in my opinion. In addition to making sure that there's enough financial stability to keep making money and to stay rich (avoiding a major depression) there are two ways to keep winning this war for the rich, seems to be either:
A. Keep the floor of the society high enough to where the poor won't rebel. This seems to be the sustainable model,
B. Have a police state/militaristic control over the population. This doesn't really seem sustainable.
Ignoring concerns about human compassion completely I think it should be in the interest of the rich class to both keep the financial situation relatively stable and to keep the poorer classes relatively happy.
Isn't that what we do with cigarettes/alcohol/x - factor etc?
As for the rich losing, recessions are temporary and whilst a few may lose their heads in a revolution, the effects are always temporary. Go to Paris and eat at the Grand Vefour and stay a night at the Plaza Athenee - it's like the revolution never happened.