The tripwire is already moving, and split: Amazon shortened a subset of server lives from six years to five, taking a $677 million hit to nine‑month net income, while Meta extended from four years to 5.5 in the same period — two sophisticated operators reading the same asset’s aging in opposite directions, in their audited footnotes. I note this forced‑seller dynamic didn’t exist for fiber, which had no obsolescence clock or collateral margin call, so the levered periphery could break faster than the telecom carriers did, even though the category is structurally safer.