Of course many more things come into play to determine how commercially successful a game is.
But the market is trending towards the action end of the spectrum. Some have combined and retained tactical elements (reason why RtWP is a good mix).
Many JRPGs that were primarily TB have become action/RtWP.
And also you can see the proliferation of many western RPGs with action elements across multitple subgenres : Elder Scrolls, Mass Effect, Fallout, Witcher , CP 2077, Vampire Bloodlines 2, etc...
TB can be fun, but it is archaic and unreal.
JRPG's aren't real RPG's. And Real time is used on this games because they are action games. About fallout, fallout 1/2 are turn based.
And look to Larian games. Divine Divinity is a hidden gen and DOS2 is sold pretty well. I prefer DD(no cooldown and stat stickie gear) but jrpg's aren't a good example.
imagine a D&D session with Final Fantasy logic
- DM : Player, here is your character sheet
- Player : But Master, i have already made my character sheet. I wanna make a half elf warlock, chaotic neutral who got expelled from magic academy due racism against elves in Thay and he found a powerful ice demon and pledged apprenticeship in exch...
-DM : No, you will gonna play with this androgynous 13 years old fighter, and you can only chose oversized unpractical sword as specialization, your alignment is lawful good and that is it.
- Player : But i like to play as a magic caster. Can i at least use javelins? A pike? Or a longbow? I actually enjoy a lot longbows IRL and practice archery.
- DM : No, you will play with this character sheet and will follow exactly this strict path, with no checks and zero mechanical and narrative character decision making. You will only do decisions on combat and the combat mechanics will have no relation to the world lore!!! I an only DMing because i failed as a writer and you will play as the most generic anime protagonist or leave.
- Player : fine, i will search another group, if you don't wanna me in your group, you could have said earlier
