That is going to take months if not years. Something tells me in a few months every one will get back to business as usual with Russia. Its too powerful a country and a major world player for the West to blacklist for long. And Crimea? It will be forgotten just like Georgia, South Ossetia and Abkhazia are that do not a rate mention in the headlines nowadays.
And I don’t think Putin is that stupid. This was low-hanging fruit for him.
We can do it, if we have the will to do it (which we don't).