Seriously its much more to do with exhusting the available content.
Konami for example have release 8 out of their 45 games. Now that might not seem like a lot but out of the 37 unreleased games they no longer have the rights to 10 (such as WB cartoons, Batman, Turtles etc), a further 16 are Japan only release the vast majority of which are yearly updates to their Baseball series and speaking of sports games 2 more of those are ISS games, which arguably haven't aged well enough to warrant releasing.
So taking those away Konami have released 8 out of 9.
They've exchusted the SNES, simple as that.







