It's not that they don't care, it's just that, among other things, their games have not been selling well lately (even for their standards) and they don't have a lot of budget to work with. I don't deny that the state of the Neptunia franchise is partially Compile Heart's fault, but external factors that involve even the platform holders (censorship) certainly don't help. For now, there is the upcoming musical Neptunia Re:boot and also the PS4 versions of the Re;birth games in the west...we'll see.