Replacement of Museums

In a section from the book Ways Of Seeing by John Berger, he discusses the idea that individual's own use of what they personally consider to be artwork or items with similar value that people hold to pieces in museums, this could in turn replace or work in tandem with museums (like that dream I had about the Tony Orlando and Dawn museum someone had in their house...at any rate). He also says that the originals can never be replaced, however believes that the way we view art in galleries and museums (certainly at least in terms of when this was written) won't always be the same, and this appears to be true, especially with more media and technologies being accepted into the art world. How would you view art differently depending on the location? Say if it was a ''masterpiece'' painted on a wall in some street location, an upper-crust fine arts museum in San Fransisco, somebody's apartment, or on-line, would you view the art in a different manner regardless of the medium or content?