I think point is without the cast body section you could just replace broken parts which may be significantly less. In practice though I don’t think it matters that much. Small accidents hopefully don’t damage the frame and if they do it’s often a bit dubious repairing it.

This more because of the local planning in a lot of western countries. Authoritarian countries force housing through much easier

Where do they do it otherwise? In Australia it’s also yearly.

People might also get bonus so in some sense you get paid once a year.

curl?