The fact that the company can’t reproduce your book without your permission doesn’t mean much if the only way to get your book into the public’s hands is through that company, or one of a small handful of companies with identical negotiating positions. None of the Big Five publishers will let you keep your ebook rights, and increasingly they won’t let you split your commonwealth and US rights, or retain your audio rights, or even opt out of binding arbitration in your contract, meaning that all disputes you have with them need to be settled not in court, but in a private arbitration system where they pay the judge who decides whether you’ve been wronged by them.