Feels like for institutional tools (where end users are mandated to just use that one system) it&#x27;s not even the retention that is the problem.<p>I would generalize it (perhaps ad absurdum) instead as: do not underestimate costs of user onboarding (in whichever shape or form).<p>I wonder if developing a competitive replacement app actually involves <i>replicating</i> legacy UI. As wasteful as that may seem. And only after that hurdle is nullified, there will be a chance to <i>gradually</i> wean users towards a new experience pattern.