Ehhh…

It was very limited by the decisions Sony made.

Proprietary memory cards (that were fuuuucking expensive, not to mention its high MSRP for the unit itself), having to manually sign into PSN to check messages instead of some sort of push notification system, very limited library (and no cross over purchases from the PSP) - it was essentially a glorified remote play console, and was abandoned soon after launch as Sony focused on the PS4.