Most of them are casuals who will buy the next PlayStation regardless. This is why I think Sony have nothing to worry about by having less power as long as the price is appealing to casual market.
That doesnt sound right, I would argue that it would more likely be the "casuals" whom buy consoles because of specs(if graphics are epic on one and bad on another, or have cool gimmick like wii ) and how they are marketed, rather than "real gamers"
I know many gamers and none of them have ever bought a system just because it is more powerful.
Many things are more important:
price vs performance vs "puplic image (it is hard to sell more expensive system if it is weaker or doesnt market how it is better if it is stronger)
Brand (people like to stick with one brand they like, unless they fuck up really really bad)
Their favourite game series (Aka those that like nintendo ips, sony ips and xbox games)
Their friends (if everybody owns playstation, it would be social suicide to get xbox on next gen if others get ps5)
do they like symmetrical sticks or weird xbox placement
And most important thing: XBOX as a brand is weakling vs Playstation outside of US/UK.
if you think that many people think "hmm, should I get that new playstation or that new xbox, hard to choose", it wont be like that for many many people. They just dont see xbox as a serious option.
Xbox can be more powerful but it doesnt matter if people dont see it as serious competitor with seriously good set of games and ecosystem,
If xbox would have what it takes to fight equally vs playstation, it would not have lost this gen so badly because it have been cheaper for years and years. They fucked up the launch, but it is not everything.
Maybe this is an US thing, but I have never ever met any serious gamer that would switch from playstation to xbox or even considered that between gens, I have met few that went from xbox to playstation.
To me it sounds kind of crazy that this would be common thing. In my world people just like one system and stick with it gen after gen, and maybe buy another system when it gets cheaper as their secondary system