As much as I'd love to second that, I think it's a bit too early to tell. Wait a few years and see.
While MGS may have started the influx of cinematic gaming, Uncharted has refined it to its own way and a lot of other titles seem to be following in its footsetps.
First gen : crash and spyro
2nd gen: Jak , MGS
3rd gen : uncharted and games like journey
MGS came out on the PS1 first
Yes however it was mainly on ps2