Let’s say you’re some slob disputing a $65 charge or some shit and they are a multi-billion dollar corporation that does thousands of these a year. Even if you object to their pick, whomever you mutually decide to go with has a chance at repeat businesses with CorpoCorpInc, but very unlikely to have repeat business with you.
Edit: I honestly don´t know anything about the details of arbitration, so if you’d like to tell me what safeguards are in place, I’m all ears.