PS1 had 20M sales after the PS2.
Both the PS1 and PS2 has legs because they were made cheap and affordable for most countries.
I got both the PS1 and PS2 for RS 400,00 here late on their gens, the PS4 is still around 2500 right now (though that was because everything got expensive again, it was around 1700 before).
A console that is now to be replaced very soon is still costing like a brand new product, like the PS3 was still expensive most of its life.
Those prices simply don't appeal to anyone.
We are saying the same thing... just calling it different names.
What you call legs, I call price.
If sony drops the PS4 to $149 this year, be rest assured it would sell another 20M unit even after the PS5 launches. At the launch of the PS2, the PS1 cost under $100. The PS2 cost $149 when the $599 PS3 launched.
But my main argument is that the PS4 doesn't even need to have legs. Sony needs to get the PS5 out and have a SKU be $399, and get the price of that SKU down to $199 as soon as possible. You want as many people on the new platform buying their games directly from you with no used game market insight and not people still buying your previous console. And I can see why they are stubbornly leaving the PS4 price at $299. They may want to create a situation where you should buy a $399 PS5 instead of a $299 PS4pro slim and a discontinued PS4 slim.
And I don't feel the investment required to make a PS4 super slim and a PS4 pro slim is necessary (even though I suspect sony may still do it).That's at least $300M in R&D and retooling. That kinda money would have been better put towards subsidizing the cost of the PS5 DE and bring it in at $349 instead lol. Or hell towards some other first-party projects.
Call me crazy, but I am of the mind that if your previous console is still doing very well when the new console comes out, then something is wrong and you have a big problem.