Exactly. The overhead of a brick-n-mortar store is significantly more than a virtual store and most retailers try to drive business to their web fronts.
That doesn't mean a brick-n-mortar store doesn't have its place and purpose because you can't really get the service online that you can in an actual store.
Actually, with some retailers, you don't want the 'service' you get in their physical stores!

Fortunately, TW's stores are definitely not that way but from everything I've heard and read, great places to go to.