> very few people enter a contract contemplating that they will be the one breaching it, so they are willing to agree to a system for efficiently adjudicating conflicts.

For broad definitions of 'people', I don't think this is true. I am utterly certain that businesses enter into these contracts secure in the knowledge that it is much more likely that wrongs will be alleged against them under the contract than that they will need to allege wrongs against the contractee, and that businesses feel that arbitration is likely to favour them. If businesses didn't believe at least the latter, or even if there were just divided opinions, then arbitration clauses would not be included in every. Damn. Contract.