Gaming

I think of it as a branching development becoming different design sensibilities. CRPGs influenced the game Dragon Quest, but JRPGS after DQ were influenced specifically by DQ and the games inspired from it such as the original Final Fantasy. CRPGS, MUDS, Dnd games, and Ultima became the basis for the Western sensibility which initially developed separately from the Dragon Quest branch (although there is still some crossover). This being the case, nowadays each region can make either Western RPGS or JRPGS because we all have pretty easy access to a lot of each others' games and developers can make the games they prefer to make influenced by what they like regardless of its origin.

Undertale is a JRPG from the West. The maker of the game began making Rom hacks for Earthbound, a JRPG, and used the skills they learned doing that do create their own game. Dragon Quest>Earthbound>Undertale is pure JRPG. Other examples I can think of are messier, but that's kind of the point.