>>34514385It's bigger, yes, but not to the extent where market size is the obvious reason behind the choice. There are ~80 millions of French speakers in civilized countries, and ~60 millions of Italian speakers. We're not talking about a super obscure language like Danish.
What happened is most likely that Italian translators tried to come up with some localizations for Pokemon names, thought they all sounded retarded and not marketable and decided to stick with the English names. After all "Blastoise" sounds better and smoother than "Tartigliere", doesn't it?
Frenchies just have extreme autism regarding Anglo loanwords and decided they couldn't compromise even with the names of fictional animals.