My one worry with these sanctions is if this goes on too long they could have the opposite effect. I think they are hoping either the Russian people or one of Putin's benefactors has enough of their lives being ruined and takes action against him. But it could also have the effect of unifying them and making it a us vs them scenario and I'm not sure where things would go if it got to that.
I suppose it depends how close the people are to their government and whether or not they recognise how much power they actually have (to get rid of him).
He's launched a war in their name (they know this), the war is going badly for him, are they going to unify behind that, not so sure.