Isaac Asimov Predicts in 1964 What the World Will Look Like in 2014 13 years ago
More than not needing, people don't want video in most situations. I remember people saying: "how could I tell to my wife that im at work and not at the bar?"
This is how innovation works in terms of reference dependence, we weight the new features versus the previous ones and decide if there is a gain, or several. Additionaly, loss aversion will be included in the formula and make it harder to change.