Money in Russia is primarily oil money and this source is not drying up any time soon. More importantly, the people fighting for changes are rarely the ones who can later be in power, but are rather used by others to get in power. Even if they get in power, it's very unlikely they are good at managing economy and the country as a whole, since they didn't understand the dynamics of political power in the first place.
For those interested I highly recommend reading "The Dictator's Handbook: Why Bad Behavior is Almost Always Good Politics". It's eye opening for anyone who thinks protesting or voting can change anything.