PS5 sounds much more impressive in 2020 than PS4 did in 2013.
Look, even 2020 games still run in 1080p on PS4, it aged well imo but PS5 is gonna be a beast!
Next gen could last even 8 years for all I care, especially if we get PS5 Pro in 2023 or 2024.
If we get mid-gen upgrades, I think the generation should last at least 8 years. I would prefer a bigger upgrade though (more like X1X than PS4 Pro) if we're going to go longer than that.