Forkability is the ability of an important system to produce legitimate alternatives to itself: communities that can fork its software, organizations that can adopt competing standards, developers that can build compatible alternatives, institutions that can create independent governance, and users who can carry their data and identity elsewhere. The framework treats it as a resilience property rather than a convenience, and it is one of the concrete guarantees behind routability.
Its deeper connection is to ontological correctability: a system that cannot be forked cannot be genuinely left, and a form that cannot be left tends to become rigid — success defending it against the question of whether it still corresponds. Preserving forkability keeps a dominant system contestable as it grows dominant, which is precisely the drift safeguard the framework applies to any form that becomes too successful to easily question.