From the article:
... "One certain result though, is that Bell will make much more profit on its Internet service, and discourage Canadians from watching TV and movies on the internet instead of CTV, which Bell now owns."
And there you have it, definitely a deciding factor - if not the sole factor - in reducing the monthly cap.
This is like when the media exaggerate the role of "video game usage" in any report on crime among youths. The aging beast trying to cripple its replacements.
