That's a lot of maybes. What we know right now is that they switched to x86 architecture per developers requesting it. Sony wanted to minimize barriers to entry as best they could.
I think most experienced developers can convert their existing x86 games to work on Mobile/ARM chips if they wanted to, or make games designed for Mobile/ARM chips. There are mobile games for mobile/ARM devices which were originally made for x86 and game consoles. Half-Life 2, Doom 3, Roller Coaster Tycoon, Grand Theft Auto 3 are games which can be played on x86 and game console Chips found in PC computers, but now also work on mobile chips like the Nvidia Tegra X1.
There is a possibility that AMD will stop making low cost CPUs for future game consoles, cheaper PCs, and laptops when it is time for Sony to design its next console. AMD plans on exiting the cheap CPU market to focus of performance. Sony will needs to find a new type of CPU like mobile/ARM for their next console when there are no longer any affordable high performance x86 CPU makers except for maybe VIA which mostly make x86 chips for cheap PCs, and settop media player boxes.
Intel CPUs are expensive, and Intel may not be interested in selling or designing cheaper x86 CPUs to Sony. Intel makes most of its money selling its CPUs to PC, Windows tablet, and Server makers. Intel's cheaper desktop PC CPUs like the Celeron and Core i3 still cost around $70-200 which maybe too expensive for a game console where Sony also needs to budget money for the motherboard, RAM, hard drive, disc drive, graphics chip, and other parts where the console does not cost over $500.
AMD admits it can’t be “the cheaper solution,” will refocus on performance
Yesterday, at the AMD Financial Analyst Day event, the company finally decided that enough was enough: AMD will no longer be competing in a race to the bottom. "It's extraordinarily important to ensure that we have competitive, high-performance cores," said CEO Lisa Su. "We have reduced our low-end PC exposure. When you look at AMD's historical business, we were very, very heavily concentrated in consumer, low end PCs, that was actually our speciality. However, when you look at that market, there has been so much volatility, especially at the intersection between tablets and PCs and differentiation hasn't been there... very clearly, we are an x86 company. We have tremendous x86 heritage, and opportunity to lead in that area. We are absolutely going to invest in high-performance x86."
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There is a chance that AMD may not survive as both a cheaper Intel x86 Alternative CPU or High Performance x86 company when mobile/ARM CPUs become cheaper, and faster where the speed difference of x86 and Mobile/ARM is not noticeable for most users. Intel will most likely continue to take more buyers away from AMD because most people trust Intel more than AMD, and more people are buying Apple Macs which use mostly Intel CPUs.
A lot of big tech companies like Blackberry, Kodak, and Motorola were once very popular, but lost a lot of its buyers to its competitors, so AMD maybe gone or nearly gone in the future when the next Playstation console is being designed by Sony.
