Yeah but some of that diehard base will inevitably opt out of future consoles and move their spending dollars over to something like Steam. Problem for Sony is, they're also always the first adopters, so early adoption of future hardware will suffer (we could even see this begin as soon as the PS5 Pro). And with slow early adoption, that will slow down or put a cap on maximum casual & mainstream adoption rates of the hardware, too.
Not to mention, some of the defectors will be among the highest ARPU in the ecosystem, so magnitudes of money relative the individual would now be lost in revenue. PS has the brand power to never have a floor as bad as Xbox (at worst, probably 70-80 million lifetime for unit sales), but their revenue could decline heavily and even more so since Sony don't have an ABK or Minecraft etc. just churning out revenue on the regular.
That's assuming the current porting strategy remains, of course. Or especially, if they accelerate it.
