I don't think this is the case. While I can't find it right now, I could have sworn there were news articles about Ys VIII selling best World Wide on Switch. I could have sworn NISA made some big deals about it.
Falcom have a policy that localizers can't start localizing until the Japanese version has shipped. I don't know why they do this but its how they've worked in the past.
They are doing this to an extent, while we aren't getting the Trails in the Sky games we are getting some others
https://www.nintendolife.com/news/2...ore_trails_games_coming_to_switch_in_the_west . Part of the problem is the way Falcom works, they don't do the porting themselves its up to who ever holds the localization for it if they want to bring it to other platforms. Xseed holds the localization rights for a lot of the PSP and some older Ys games. Since Xseed seems to have no desire to bring these things to Switch it probably isn't going to happen. It's been rumored that was a big reason why Falcom made the jump to NIS, is because they offered up porting their games to other platforms. Which is why Switch got Ys VIII, IX, Cold Steel III, and IV, and now these other Legend of Heroes games.
If you want to see stuff like Ys Seven, Oath in Felghana, Ys I and II Chronicles, Ark of Napishtim, Memories of Celceta, the Trails in the Sky games, or the first 2 Cold Steel games, you need to bug Xseed. I'm not sure how Ys Origins moved from Xseed to DotEmu but maybe we can see that again with others, but who knows.
I know people online were pissy when Falcom switch to NIS but honestly it was the best thing they did to get their games on more platforms.