Totally disagree with that. Not sure what you mean by "so much discussion" but PS4 has been out four years. That's a fairly natural time to start talking about its successor which could theoretically appear next year, or certainly be announced. You can find bits of discussion of previous console's successors even just a year or two after those consoles release. Which makes for quite entertaining reading.Anyways it'll take some time, I expect some bumpy slow months for X1X hardware but it's the long run where it'll shine. That's why pressure for PS5 has been ramping up a lot lately. If X1X wasn't a threat there wouldn't be so much discussion of PS5.
https://www.geek.com/games/xbox-2-features-551855/ (2003)
“the next-generation xbox will feature digital media capabilities such as video and photo editing in addition to games,” gates was quoted as saying.
XB1X isn't putting any pressure on Sony. Until they start losing market share to MS (potentially PS4/P buyers getting and XB1X instead) they can operate irrespective. Here's Sony saying XBox might limit PS2's shelf life...
https://www.geek.com/games/sony-ps2-has-limited-lifespan-546281/
Oh no! Xbox is more powerful! We need to replace PS2 ASAP!!! Hang on, we're still selling truck loads. What's the rush? Oh yeah, greatest selling console of all time and most money EVAR. You don't have to be the biggest or fastest to win a market. This is common knowledge. No-one in this business is stupid enough not to know how it works now and to rush headlong into a SEGA-style emergency console. PS4 is making Sony money, selling stronger every year, so PS5 will come when Sony are good and ready.in a recent interview, the venerable president and ceo of sony told the financial times that the release of the xbox, with its in-built hard drive and ethernet support, could likely shorten the life span of the ps2 to a paltry three years, according to zdnet.