Do you think the game would die without the PC playerbase?

[Fyrebrand]

PS4 support will likely die with Endwalker. Consoles always hold things back eventually.

Since you can literally buy Endwalker for PS4, I assume you mean "by the end of Endwalker's life cycle." But even then, I seriously doubt it. FFXIV is still an 11 year old game. Unless Sony terminates all online functionality for PS4, I expect this game will still support it. Plus, the PS5 client only just came out a few months ago.