I see that a programmer or artist is slightly different because the work the programmer or artist did can be duplicated where as the lawyer, plumber, doctor, car mechanic's work can not but they're still effectively the same. Someone worked and expects to be compensated for that work. Not compensating someone for work you received I believe is also called "theft".
I'll also note that the most pirated software often represents a lot more work than a single lawyer, plumber, doctor, car mechanic. If you use one of their services you'll likely get a few hours of their time. If you pirate photoshop or MW3 that likely represents a few hundred man years of time.
Anyway, I'm not arguing against piracy. I'm not sure what other word their is though for taking someone's time/labor without paying them.