Tell us about it! The phenomenon has even got a name "The Tower of e-Babel"
If you want to, you can find many discussions of it around here just search for e-babel/ebabel and you'll get lots of 'em.
The fundamental problem is that there was no standard format to begin with, so everybody just made their own (mostly so they could implement DRM solutions), and now there are a bunch of them.
Companies do seem to finally be seeing the light about allowing formats other than their proprietary one, and there is pressure building to hammer out a standard, but it's a slow process.
