There are very few games that are "game changing" because that ceiling has been pushed further and further higher to levels that it would take a serious technological or cultural paragon shift to even make happen. Like, groundbreaking unrealized potential never seen.
The Witcher 3 is hugely successful and popular PS game but so was God of War 2018, Last of Us 2, and Hades. Not taking anything away from Witcher 3 but that's not "game changing." That's successful. That's pretty damn good. Successful and able to feed off it's own success like many other. Its got a series Netflix adaption. Last of Us is getting an HBO series. Hell, League of Legends got a Netflix series too and its one of the most popular MOBA games out there.
These type of cross-media, pop-cultural acknowledgments aren't "game changing." They're the natural course of popular franchises in the information media conglomerate age. I don't know why that would be seen as "special" when every year such things happen.
I would say FFVII-R definitely is a successful, well made and memorable entry in video game pop culture that will be remembered for years to come, even if it doesn't get a Netflix series or something. It's very much alive. 1997 was an entirely different zeitgeist and technological time that's more than likely not going to be replicated any time soon. The original FFVII broke the door wide open for JRPGs to take a firm foothold as a viable genre here in the west. It was one of the vanguards of CGI RPG storytelling on a console that went beyond pixel graphics. It was a very mature yet memorable and brand new kind of story not seen in the West before.
These are firsts that are not easily replicated with the video game industry well into it's maturity. Hell, with storytelling in general. Audiences are far less naïve than before.
And that's valid and okay. We are in another age. Standards and environments change. Expecting history to replicate itself in an ever evolving way is unrealistic. But it was still good. And for the part it focused on, 100% better than the original. However, what remains still needs to be seen but if it keeps that level of quality, adaption and intriguing presentation it can surpass itself. We'll see.