Contrary to that, people of the western world still believe that they can oppose an abusive government in courts and by voting for another government.
Rather they are cynical and "understanding" in the grumpy old man manner.
Having said that, when was the last time people got pissed off and gave the government the boot in a western country? It seems to me that any changes were minor, and the people in power are more or less the same group no matter who you vote for... not exactly super democratic, either...
Also, in Russian mentality, it is not important if you committed any crime or not, it is more important if you were smart enough to not get jailed or not. Because nearly everyone who is politically or economically active commits crimes (which carries no stigma and is part of the system), and nearly everyone can be jailed either having committed a crime or not. So nobody thinks of degree or existence of any crimes he might have committed. This is not a part of the question. It is about being stupid enough to raise too much government's anger, not not leaving country in time.
That's how Russia works (and Mr. Putin has nothing to do about this, that was the norm long before him and once the system might eat himself in exactly the same way). I doubt he even benefits from this much.