@Wman1996 To be fair, it's very hard for a company to have two successful consoles in one generation. If the Vita had done better, it likely would've led to slightly less sales of the PS4. Even Nintendo has had trouble supporting two systems at one time. They continued to lose marketshare from SNES-GCN and only enjoyed increased sales for a few years on DS & Wii until the casual audience left. For what it's worth, it was on the market a lot longer than the GBA was (which only had 3 years before a successor released).
Definitely not knocking PSP sales though. The machine was incredible, but it would have been very hard for Sony to follow it up with a successful successor. Also worth pointing out that the only PlayStation home console so far to not exceed 100 million sales was released around the same time as the PSP.
