I worked for a SMB startup years ago that had a “call us” cancellation model, mostly out of a need for several manual steps as part of offboarding and yes, probably some recognition that cancelation friction helped metrics. Eventually the support burden was too great and we built a fully automated no-BS cancellation flow. Our retention metrics immediately tanked to a greater extent than anyone had thought possible and we were forced by the CEO to redesign it with a bunch of interstitials and extra clicks.
I feel like this is the dark side of SaaS economics: lots of customers pay for recurring services they don’t use, out of optimism or laziness or something else. Being able to leverage that inertia can be profitable, even if it’s also unethical.