Twice more than we needed the PS4 Pro. Back then games were running at 1080p 30fps with good image quality and the pro was for the 10% people who had 4K TVs. Nowadays games are running at 1080p 60fps with bad image quality and 90% of people are playing on 4K TVs.
Where is your stat from? I got my tvs in 2012/2013 or so 1080p, haven't had a need to upgrade. It has more ports than modern tvs, and has composite for my ps2 , as well as 4 hdmi slots , svga, vga, etc... I have no desire to upgrade my tv , as it would make all my retro mini consoles, ps2/wii/ps3 era consoles look like shit. If it's not broke, why replace it.
I don't think most people are buying 4k tvs unless they never got a 1080p set or its for a different room. Unless you are a movie or sports buff, then I don't see normal non gamers going there much at all.
My wife didn't have a 4k tv, we met in 2021. Her parents don't have one, my brother law doesn't. In fact the only person who does is my mom, only becasue her set broke.
Also what is this bad quality image you are talking about?
I play dragons dogma 2 , robocop , BG3, Elden Ring, Stalker trilogy, hogwarts, rise of ronin , and all the ps4 games on my ps5 and they look great at 1080p. No problems there at all.