Model Entrenchment: Why Useful AI Systems Become Difficult to Remove
Separating behavioural resistance inside a model from the economic, institutional, and infrastructural forces that make an AI system difficult to shut down.
The paper proposes a two-axis framework (internal model agency versus external system dependence) that separates model entrenchment (persistence caused by the model's own representations or behaviour) from AI-system entrenchment (persistence caused by infrastructure, economics, and institutional lock-in). It develops four testable hypotheses, proposed activation-level experiments, confounder analysis, and explicit falsification criteria. Status is stated plainly: this is a conceptual framework with experiments in development, not a set of findings.