Sure that can work for individuals and small groups with physical separate high availability. It maybe faster and simpler to find another replacement, but I'm thinking about it from a permaculture perspective of sometimes old parts inventory exist somewhere for cheap or it's only a small broken component that could be fixed to avoid unnecessary e-waste contributions and spending more money on consumption to fix a problem.

Typical enterprise server lifecycle is 4-6 years purposefully throws away uncertain remaining potential value because budgets needs to be spent, risk aversion to repairing what's considered "outdated", and possibly acquiring faster and more energy-efficiency equipment. I would guess it's about the same lifecycle length for enterprise and personal laptops too.