But they haven't been "stuck" at 30fps since the early 90s. It's a design choice. Just like someone could make a modern day crysis on PC that could barely scrape 30fps on the highest end of the GPU spectrum. If people really cared about 60fps like the vocal minority on the internet likes to believe, we would have more titles at 60fps.

And also, PS3 and 360 weren't considered underpowered when they launched. The underpower thing wasn't really an arguement until the gen was well underway, but that's a thing that will always be so on hardware that is designed to be static in a field where theres constant improvement.

And, actually, "underpowered" is completely relative to your own personal benchmarks. Again using a top of the line GPU for example, someone might feel that the card is "underpowered" the moment AMD or NVidia releases something that's exceeding even past benchmarks. Which seems to be happening every few months. It's all relative