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He's not trying to sell anything, but Sony is. Mark Cerny doesn't work for Sony, he is a consultant brought in to be the lead system architect on the PS5, whether the PS5 sells 100 units or 100 million units, Mark still gets his money. One thing is for sure though, he is very well versed in both the software and hardware side of things and knows more than 99.999% of the people on here about the subject. He's a pretty analytical guy that doesn't seem to spout the typical corporate marketing BS, he likes facts so when he talks about stuff it usually has some pretty good weight behind it.