Back in the 80s, people thought that PCs would make consoles obsolete, too. Platform never really means much in the grand scheme of things. Games do.
In a way, you are right, but the reason consoles didn't die was cause casuals started caring about games. Before consoles become so dominant in the market, most of the audience that was targeted was gamers. That's why Nintendo has started to target the casual audience with their consoles. Gamers are moving more and more over to the computer, and casuals make up a bigger number than gamers. They are moving mostly cause of Steam. It is such an advantage that I literally have quit buying consoles myself.
My point is that, it is better to be ready for the jump than to redo your work when it happens.