Sundance channel Shows first three films...
...the original and then the second and third Amityville Horror films. These shows and the 2005 remake are shown on many different channels, including critic's choice networks. Popular films that can still sell advertising space. The original and the 2005 remake have become American favorites. People just like a good fiction ghost story.
Now we have another version coming next year, and Christopher Lutz may have a book out which addresses the issue.