But it is a fixed spec really, just that it has a faster CPU and GPU? Issue with previous gens and their 'upgrades', was that it was an add-on, and a game had to support the feature. With the pro you'll essentially get a boost to all your games, those that have the RT option but only hit 30FPS might get to 60FPS etc. So, if you have the money, why not? No different to those who upgrade a PC GPU every couple of years...it's nice to have the option.
A fixed spec also takes into consideration clock speeds and core counts, if they're increasing these then the spec has changed. The ps5 pro is rumoured to be using a new iteration of the rdna gpu with better ray tracing capabilities, and it will likely get a cpu clock speed bump as well. And yes games can get a boost from this but that's one of the issues, it goes against what a console is meant to be and has been up until these 'pro' gimmicks came out, that being a fixed spec piece of hardware that you have for around 5+ years before it gets replaced.
When Microsoft were launching the original xbox and selling their online experience one of the things mentioned in one of the blurbs that their online was an 'even playing field' as everyone had the same hardware so nobody had any advantage. They were comparing it to pc gaming at the time. Now that's all been turned on its head as people with pro consoles can get better framerates and that helps in multiplayer gaming. So their even playing field has vanished and its more like a pc upgrade where better framerates can give an advantage. That's not what console gaming was about, yet because Sony and MS want to make a few bucks extra they essentially dip into the pc mindset and offer what's basically an upgrade halfway through the console lifecycle.
As for Sega, yes Sony had something to do with it, but Sega ****** off their own fanbase and basically drove them away by releasing upgrades and consoles and cutting support for them far sooner than many expected, for instance the Saturn had a lifespan of not even 3 years before being replaced by Dreamcast.
The entire point of the upgrades they brought out for the Megadrive was the SNES was a superior console and the Megadrive was starting to show its age. It had a very limited colour palette, its audio in games could be crackly. You just have to look at Streetfighter 2 Turbo for the SNES and compare it to Special Champion edition for the Magadrive, compared to the SNES the Megadrive version looked far duller due to the colours and the audio for the moves in the Sega version was crackly compared to the SNES.
Sega jumped on the cd bandwagon, that was a failure, they tried again with the 32x, produced a grand total of 40 games for it before canning it (they even had some games requiring a cd and a 32 x to play), they had a console called the Neptune in development which was an all in one Megadrive\32x but that never made it out to market, then the Saturn came out, that got a barely 3 year life span as their top console before the dreamcast replaced it. Sega just burned their bridges by releasing upgrades and consoles before killing them off long before they were expected to.
