Christian culture??

Ok, so just a quick random thought...the Bible tells us we should be "in" the world and not "of" the world. But it seems to me that, as Christians, we have created a sub-culture that is no less "of" the world than the market culture of our day and age. So instead of having book stores, we have Christian book stores. But they are still stores with someone making a load of money off of books, cd's, etc. Instead of having concerts, we have Christian concerts, where at least the name of Jesus is mentioned in the midst of merch sales and all the rest. Sometimes I just have a tough time because it seems as if we, as Christians, aren't much different than the general population...