I'd argue it is even longer on average. That really kills the industry so not something I'd think they would migrate to. As someone else pointed out who is going to buy more than one smart TV to play games for different companies?"We see in the mobile phone market that typically there is a cycle of people replacing their phones roughly every couple of years so a new device like a smartphone penetrates the market quickly," he said. "But when it comes to the television market, the cycle for television replacement is actually much longer; say a five-year cycle at the shortest, to a seven or even 10-year cycle at the longest. So, however fantastic the new television is to be launched, it's not as likely that people will immediately move to upgrade a television necessarily because of that longer cycle."
Digital...sure (I don't want to argue about that anymore) but Smart TVs? No way.