I am not sure your prediction will come to be. Every year for the last 4 years the tablet market has become more saturated. There are users who prefer Android tablets as well those who prefer IOS. Then there are the users who cannot afford brand new and will instead buy used. Trying to get everyone who already owns a tablet to upgrade to a new one will not be an easy task.
In our business, we are using iPad Air devices equipped with custom software to perform a variety of tasks in the medical industry. Most of our implementations are currently in hospitals. For our customers there is no immediate need to upgrade to the iPad Air 2. And there is the matter of money. Hospital budgets are already stretched to the core. Reimbursements are down and with Obama Care, the situation is degrading before our very eyes. We see it everyday. So, perhaps the average Joe, such as yourself can afford to buy a new tablet every year but big businesses cannot. Since iPad cannot be user upgraded, that presents a huge challenge in getting companies to invest and take a chance with. I think the partnership between IBM and Apple will result in some very good technologies being developed - whether for tablets or something else yet to be invented.