I mean, I'm not an expert in any way, shape or form - but if you google average trends of people owning their devices - most people seem to think that the trend has changed to people owning devices for longer and longer, I don't know of the veracity of this data, but they seem to be from 'data companies' - I think it's fairly interesting either way, we have a very big push from modern media to buy, buy, buy YouTubers advertising, Celebrities etc, but realistically I don't know many people who upgrade yearly these days both techies and non-techies.