There are a lot of companies that claim to do industrial rope access outside the scope of the certification programs, but be skeptical of them at first. (That doesn't include companies in other rope disciplines that are different from rope access, like tree climbing and entertainment rigging. Those are different trades. RA takes most of its methods from caving, and some from rock climbing.) If you want to learn to do it right and have a good experience on the job, "go legit." But that means you'll have to get certified. Unless you have specific, in-demand skills (electrician, fiberglass technician, weld inspector), few companies will pay for your first course - you'll just have to pony up $1000+ on your own. However, once you get a job, they'll pay for your re-certifications, as well as follow-up courses that you take as you get more experience and climb up through the certification ranks.