I doubt portable games would affect OpenGL's use on the desktop directly. Games on the major consoles are typically not ported to portables and vice versa, so

I doubt portable games would affect OpenGL's use on the desktop directly. Games on the major consoles are typically not ported to portables and vice versa, so the two markets will remain segregated. And while console games are frequently ported to PC, portable games are not -- although perhaps this will change with the adoption of WebGL mentioned in the article. In any case, portable games will not directly help the performance, stability, or feature-richness of desktop OpenGL drivers in the way that console games help desktop Direct3D drivers. That said, one way that portable games could contribute to the general advancement of OpenGL is by being the first platform that new programmers learn. A typical console game requires significant coding experience and artistic assets to compete, while the expectations (and costs) for a portable or web game are much lower, making such a game a more appealing target for a beginning programmer. And perhaps those programmers will continue to use OpenGL when they go on to make desktop games.