We've never been so interested in TV shows - but we aren't watching TV. Instead, we're turning to online video - whether it's Netflix or YouTube. But new technology isn't solely responsible – a wider shift in lifestyles is creating a natural path towards hyper-diversification.

While people might increasingly watch TV online through catch up sites, it can be frustrating when episodes for a show you're watching are no longer available. But the BBC has a solution. It's launched BBC Store, which lets people buy and keep digital copies of old programmes.

Until now, television viewing has resisted much of the digital flurry, but with people spending time across multiple devices and dipping into a buffet of distractions – from big screens to little screens, Twitter to IMDb – this is changing.

With on-demand services thriving and viewer numbers falling, is the golden age of TV over? Canvas8 spoke with Alan Wolk, author ofOver the top: How the internet is slowly (but surely) changing the television industry, about how TV will adapt and whether the traditional ad model will survive.