Econ lenses can be quite useful, but econ 101 ones rarely are in a context like this - it's the econ equivalent of they physics "assume a friction-less spherica

Econ lenses can be quite useful, but econ 101 ones rarely are in a context like this - it's the econ equivalent of they physics "assume a friction-less spherical cow in a vacuum"; i.e. ignoring some of the things that make this an interesting real world problem, doing X should mean Y. Except it doesn't, for all the reasons you assumed away.