Higher borrowing costs push existing borrowers to repay and exit rather than keep positions open on a market being wound down.
Once exposure is low enough, the oracle feeds that price collateral and trigger liquidations are eventually turned off.
The market is formally deprecated once remaining exposure on the chain is close to zero.
Freezing deposits before touching price feeds gives existing users room to exit in order, instead of forcing a disorderly unwind.
Protocols that expanded across chains during high-incentive years are now applying harder revenue-versus-cost tests to which deployments stay live.
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