Ironic attitude, given you're reply to me - mobile device or not.
I apologise. That was not my intent. I was just giving a very sweeping, generic statement that imo, covers the broad generlsation of why "Sony" would think this is not a problematic execution. I'll go into more detail.
In any case, when discussing something, it is good form to discuss a topic, rather than dismiss anyone who disagrees. I'm interested in discussing why you think a dual-hardware launch is likely, given the current and past realities of the consumer hardware market. I believe it would kill either device's chances of real success for the reasons I explained. I look forward to your thoughts.
Let me frame my arguments first. I do not really have any deep-seated opinions or strong perspective on whether or not this is a bad thing or not. My timeline and my arguments are built on the assumption that Sony will do it, and I'm thinking from the angle of why are they doing this & what is a good execution of this plan.
Historically, consoles have been a loss-leader product, where profits are not recouped until year 2/3. When this happens, along with the fact that software development are becoming more and more expensive and take longer to make, it invites the desire to keep a product relevant a long time, because to create a new SKU is creating of another loss leader that has profitability impact.But when consoles (well, the PS4 at least) are now profit drivers? Suddenly there is a much stronger incentive to introduce new products, especially one that is built on top of R&D of the previous model, as they are potentially new profit additions to the pipeline.
In theory, and I say theory, a successful execution of the PS4K model, is the not all that different from how Apple sells 2-3 generations of iPads/iPhones at different price points, all reaching out to their peak audiences while squeezing out the most money from the "hardcore" double-dippers and upgraders for maximised ARPU.
In theory, anyway.
The merits and fears of the inability for the console market to adopt the short-upgrade cycle is definitely a concern. But there are enough external market shifts and evidence to imply that the fear is probably not as large as perceived. Dedicated GPU card markets are growing exponentially YoY, showing a strong demand for power among enthusiast. In the phone market (I'm not just talking US, but globally), the cycle of upgrades have been shortened significantly, as more and more people are looking at annual/bi-annual/tri-annual upgrades of smart phones, even at full cost. There are market signs of consumers already being "conditioned" to being okay with upgrade cycles up-to-3 years, and if the rumors pan out, PS4K comes after 3 years, which is the stretch timeline for phone upgrade cycles globally.
From a technology and core platform perspective...
In the past few years, everyone has been talking about "platforms, platforms, platforms" in a way that is not hardware-fixed. Account-based system, digital, virtual console, "evolutionary" consoles, backward/forward compatability, x86 PC model. An evolutionary platform, one that builds off the foundation of the previous version. The very nature of such a model instead of large generational leaps practically implies that timelines between the platforms are shorter, because new models can exist to be just a profit driver on its own, and do not have to hinge itself on creating new software platforms, but hinge on legacy products.