I'm a pro mechanic but I never really minded paying for bike work before I started this career when I didn't have the experience or tooling to do something. These days I get annoyed when it's really mostly just tooling keeping me from doing something (like Fox rear shocks). Wouldn't be too bothered to pay for skills I'm unlikely to acquire or get tooling for (carbon repair, for example).
For a (bike) mechanic, I kinda just am not that into cars--partly I've never until now have I had the space to possibly work on a car. I don't particularly mind paying for this work, even if it's undoubtedly skills I can learn and possibly some of it may be economically advantageous to learn and get tooling for.