I didn't think I was discouraging you, I told you something that I bet your professors don't, which is how to get into that union through the back door.
And having a degree in the field - which few of us do interesting enough - is a beginning, a good one, but one (unless you are in some state-of-the-art program) is not going to have you graduate with the professional certifications you need to do the work in a commercial sense. Riggers have to attend and pass certification classes and demonstrations to get that paper. In California every head electrician has to be a licensed commercial electrician. That requires taking a huge test and passing it, and you can only qualify to take the test after you can prove you have worked over 10,000 (verified) hours* in the field under a licensed commercial electrician.
But do be aware, that even those of us in heavy demand in huge work areas still refer to it as 'the best part-time job you'll ever have.' We all either do other things in the biz (guitar tech, venue maintenance, studio work) or we do construction stuff, or have some other gig going on. I do contract research and write speeches/presentations and do power point presentations for business types. I also do a lot of venue maintenance including being a certified tech for Martin and Vari-Lite so I go into places every year or so and clean and maintain the lighting systems. My boss has a rail excursion company he runs, as well as an electrical contracting company that he owns.
I will have worked all of 3 days from December 20th to Jan 30, and I'm one of the people who worked a lot in that period. It's very seasonal stuff. It's also rarely long term. It's gig based. So you have to have something to fill in that time unless you can save, budget and plan to take a month and a half off a couple times a year.
P.S. Did you know that most Tech Directors for major venues are licensed C-10 (top commercial grade) contractors, because they have to be to do that work - the insurance companies insist.
* - that's five years, full (40 hours a week) time.