I think that in a not all wizard game, the GM has to clamp down pretty hard on magic being the omni tool to short cut through all problems.
One way to do this is to say that magic is capable of doing X, but most wizards haven't practiced it enough to do it well. If you want to be one of the people who has practiced enough, take a stunt or power expansion (or spend a fate point for a temporary power expansion).
So, for example, can you fly with magic? Harry indicates that it's not really a matter of having enough power to fly around, but much more a matter of having and keeping enough control to avoid becoming ground pizza that's the problem. So, want to be a wizard character to flys around with magic? Take the wings power, and say you are flying around with evocation instead. Or spend a fate point for temporary access to 'wings' and use 'evocation' to fly around for a little while, then embarrassingly fall out of the sky at the end, to show it's not really something you can do all the time.