It is probably worth noting, with significant attention focused on substitution of mobile and Internet video for traditional packaged multi-channel video, that there's lots of activity, money and attention focused on substitution of other services such as advertising.
And advertising already is at an inflection point: video isn't there yet. That's important for anybody who thinks they may have a chance to build a business based on changes in user behavior.
And inflection points are crucial. Move too early and you die. Move too late and you miss the opportunity.
The analogy: assume firms have a chance to establish themselves when water turns to ice or to steam. Since most major changes in established markets do not occur overnight, the analogy is a gradually rising or falling temperature. For a long time, it appears as though not much is happening.
But then the quantum change occurs. Almost instantly, water changes to gas or forms ice.
That's pretty much what happened to the U.S. newspaper business in early 2009: an accumulation of decades worth of changes produced a quantum change. Video is not there yet. Advertising is, in at least one segment of the business.
Since the tipping point has been reached, we should expect change at a faster rate than has been happening.