00393nam a2200109Ia 4500008004100000245016200041260003400203260000900237300000900246500001300255650001500268170224s9999 xx 000 0 und d aWe show that being proactive and encouraging customers to switch to cost-minimizing plans can, surprisingly, increase rather than decrease customer churn.​ bJournal of Marketing Research c2016 a53:1 aFebruary xMarketing.