PS4 NEO, 9th gen or not?

[haxxiy]

Angelv577 said:
Don't think so. Every game should be playable on the old version.

What if three years from now, there is a PS5 with games playable on the PS5 and PS4 NEO, but not on the original PS4?As if to assure every console iteration a normal lifespan. That should raise questions...