Check out this post from his facebook page...
Smartphones great for the environment...every time someone's using an iPhone 5 to access the net they're using 1/68th the energy of a desktop PC and 1/25th that of a notebook. Similarly when one watches a video on a phone instead of on a full-sized HDTV and set top box, 1/123rd, (i.e., a greater than 99% energy saving) or plays a game instead of using an X-Box Console + a TV, 1/198th the amount of energy.So even if things in the world worked out so that every human owned and used a smartphone or tablet (up from approximately a fifth with computing/internet access today?), the energy savings would be enormous, and likely the single easiest, most feasible way to cut the world's energy budget significantly - and quickly - and with more positive tradeoffs than negative ones in the content consumption experiences for most tasks done with all these devices most of the time.
You were right on in your interview.This displays the fundamental lack of understanding of economics by Molyneux that was at the core of my interview questions to him.
First, there is Molneux's leftist type concern for the "world energy budget". There is no "energy budget" any more than there is a lumber budget, coffee budget, iron budget or oatmeal budget. There are supplies of these products, which can increase or decrease depending upon prices, but to call these supplies "budgets," suggests A. a fixed amount and B. something that needs to be managed at some national level.
Anyone who understands free markets, would not for a minute be concerned with the amount of energy that is used by various consumer products. Prices will simply dictate limitations of use of products.. For example, gold is a perfectly functional metal that could be used in the construction of bridges. It is not because gold is valued more as jewelry and as a safe non-inflationary alternate medium of exchange. This is reflected in its price. There is no need for any thinking about a "gold budget." The price of gold provides the knowledge to bridge builders that gold should not be used in the building of bridges.
In the same way, it is economic ignorance to be thinking about an "energy budget." Prices will signal to us how energy sensitive our products need to be. That plenty of people use full-sized HD television sets and X-Box Consoles + a TV, suggests that the energy used for these products is not prohibitive for most. Moyneux's concern about a "world energy budget" belongs up there with the concern for the "world jock strap" budget. It's a complete central planning notion that results from the failure to understand how prices signal uses and production.