Ha, yes! This is basically a neat encapsulation of my last post.
If this model gains traction on the market I can easily see a two yearly cycle, and if MS and Sony are releasing on alternate year's, nobody's performance crown is going to last very long (all else being equal).
Just buy into the platform(s) and iteration(s) that suits you, and upgrade when you want. Barring catastrophic software compatibility issues, you're not forced to chase every upgrade. Otherwise you'll end up in a kind of PC-lite-like 'there's always something better around the corner' hesitancy/anxiety.