The demo was PRE-RELEASE ONLY. That's why Kii/oon took down content with it- they were somehow worried that having content uploaded pre-release would hurt sales.
If you used a Piko trial bank, they wouldn't issue a takedown, because they have no way of knowing you used a trial. The only reason you can't do this is b/c, like the majority of V2 vocaloids, Piko had no trial version after release.
ok i do think it's a little funny I always assumed Fatal Frame IV didn't get a western release just because they didn't do it for no particular reason (which i'm kinda used to), but turns out there's an actual reason we never got it