Can somebody explain how a company can just abandon their franchises like this?

[160rmf]

Ape Escape is making its way to be a abandoned franchise in my point view, the last game released was that ape escape move and we didn't have a single title based on the original adventure trilogy for ps2. I just hope that they're holding to release for ps4. I don't have hopes for a F-zero game in this generation... I want to be wrong