A lot of wealthy Russians have assets outside of Russia, I don't think many Westerners have any assets over there so Europe could easily freeze them, cut off their money streams. You can deal with other countries to cut Russia out and bring their economy down. No doubt there are those looking to buddy up with Russia so that when this dies down, they want the best trade deals. Saving face, cutting deals, choosing sides is more important than the civilians. Expecting superpowers like USA to help is unrealistic, they have nothing to gain by getting involved same as all other nations.