It wasn't Bernie Stolar's job to decide how RPG localizers like Working Designs should spend their money, nor was it his job to ensure that his console's libraries remained as un-diverse as possible.
And it was Sony America who banned RPGs (for a time, also known as the Bernie Stolar era), not Sega America.
RPGs were a niche market in America, but a few companies were able to carve out a living by tapping into a high-quality Japanese market and delivering premium experiences to a happy and loyal fanbase. RPGs in America were a valuable market on the SNES. Working Designs was one of the biggest reasons for an American to own a Saturn. But PlayStation never saw that same love (at least not initially) because Bernie Stolar was actively banning an entire genre, for no good reason.
Then Bernie Stolar was shown the door at Sony America (shortly ahead of FF7's launch, which Sony Japan had declared to be a priority in America), and he wound up at Sega America. And he didn't just kill RPGs, he killed the entire Saturn (because he didn't care about it, or Sega's financial health, all he cared about was the two-years-away Dreamcast). RPGs shrugged and moved over to PlayStation, and were bigger than ever.
Dreamcast launched and (thanks to FF7) Bernie Stolar was forced to eat his no-RPG policy, allowing Ubisoft to publish the B-tier "Evolution" at launch while they worked on "Grandia 2" (the sequel to an amazing game Bernie had banned on Saturn, and driven into the arms of Sony), while Sega America themselves worked on translating Skies of Arcadia.