You have to consider that him and Alex are pretty much best buds and it's always been VH for them, and that Eddie had a pretty crappy decade in the 2000's. Maybe he treats playing in a rock band more like a job and pursues other interests in his free time rather than making solo albums. Seeing him show up at a small joint and ripping out some instrumentals would be awesome but I'm not sure it will ever happen. The dude has a bit of an ego also so that might affect him collaborating with others besides his brother. Although, I am a little surprised he has never jointed with Allan Holdsworth in some project since Eddie always credits Holdsworth as a huge influence.