It all comes down to assets production in this day and age. Ps1 jrpgs could be huge cause areas were just a few screen of pre rendered backgrounds that took days or weeks to complete with a handful of people working on them. There were no other pre rendered cutscenes besides the CGI ones. There was no mocap, no voice acting, barely any animations outside battles
It takes a looot of money and time to do that and it wouldve taken them 10+ years with no source of revenue in the meantime.
Its simply not financially viable unless they wouldve done a AA game. The games have been great, though the story beats and pacing have suffered bc of this