Who knows. Maybe.
Prequels seem to do fairly well. Look at Stranger of Paradise and Crisis Core.
Tbh, I think the FFXIII were somewhat doomed from the start, as the very game is, well... complicated. But the others I think it's actually mostly a console issue? Like, Dirge of Cerberus was only for Ps2, it never got ported anywhere else. I'm still super glad I own it and it's one of my top 1 games no doubt. FFXII Revenant Wings is DS, whose games from there aren't that popular as far as I know; only the two mainline ones, I believe, and that might be because those are Remakes. On that note, The After Years I think it's on both GBA and DS? Idk for sure, but many people probably barely heard of it (I know it took me a while to discover its existence), and if they played, they don't prounounce themselves much about it.
FFX-2 is the first and most popular and known one, but people don't like it and I'll never understand why, because apparently it was a huge success back in the day or something. I would say that selling it alongside FFX on more recent consoles is a smart strategy, though I wouldn't know for sure. Its system is one of my favorites ever and it just has an overall fun vibe. I really don't understand why people dislike it.
But yeah, for some of them I'd say it's a console and availability issue mostly. I could be wrong, however.