I'm also in a profession that provides an ample supply of foes as part of the work. My foes are not so inspiring, but they are powerful within the domain.
The most powerful, so maybe it's inspiring that anyone shows up to do battle with them.

There's an interesting line in one of the best things I've ever read about therapy, or fictionalized therapy (Lisa Alther's Other Women), about the therapist who understands the client needs to lock horns with her and the client thinks they are in a real struggle, but in fact the therapist is a faux foe, like your favorite uncle who lets you win at chess when you're a kid. To have a therapist as a foe would be a true luxury in terms of time and money, and I can't imagine having enough of either to engage in this way. Power to the people who do. Having a paid foe makes less sense to me and what I go to therapy for than having a paid friend, but I think whatever kind of therapy helps people is just fine and nobody's biz but their own.