If Sony want to get back into being in the realm of the top-dogs in tech, alongside Apple, Google, MSFT, they need to get into the r&d of quantum computing.
It may be a little early on the timeline, but the earlier they get in, the more potential there will be for them to have the technology to drive development of PlayStation iterations until the mythical "9".
That's only 5 generations away, and it we believe what Mark Cerny is saying, and the belief in the "generational" model still exists on their roadmap, that's only 20-25 years out. Can you imagine the progress that will be made with d-waves quantum computers in that time?
With current processor technology development slowing to a crawl, it's seems unreasonable to expect an 8X increase in power from the previous gen going forward.
At the very least, Sony should purchase a D-Wave and throw some engineers at it to see what they can come up with. With that foundation, maybe enter into an arrangement with Samsung to develop quantum computers themselves, or with funding from the Japanese government.
If anyone has any doubt about quantum computing, it's viability, or its potential, see this video explaining a lot:
https://youtu.be/PqN_2jDVbOU
Take a look at Apple; while other companies such as Samsung, HTC and Google are using chipsets (SOC) from Qualcomm, Apple bought an Isreaili company called P.A Semi back in 2008 and have since been designing and using their own chips in their iPhone and IPad products, since the A4 chip introduced with the original iPad. They're on the cusp of introducing their A11 chip with the iPhone 8. Apple are on a mission of owning all the relevant technologies in their products and that is one major factor of what makes them as successful and their products more powerful and efficient than their competitors.
I miss the days of Sony developing their own chips, the last of which I believe was the emotion engine of the PS3. Granted, this was a chip that almost bankrupted the company, but the top brass at some point must have approved it and saw it as the correct way to progress.
Quantum Computing is something completely different and it's applications are currently unimagined. Video games and Sony's industry-leading position offers them the opportunity to invest in quantum computing, using Videogames as a justification, while continually developing the technology that will likely bring untold changes to our lives in the very near future.
Tl;dr Sony needs to do R&D on Quantim Computing STAT!
Edit: saw another video on Computing power:
https://youtu.be/JhHMJCUmq28. Obviously, everyone knows we are hitting the physical limits of of current technologies. It's with this in mind that makes it difficult to imagine how we are going to get to a PS9 in our lifetimes