It's the same in other walks of life.
People strain under the yoke of dumb rules, and it's no different with rugby on the field and off.
So we come to the case of Nelo Lui. Lui broke the letter of the rules by playing for two teams this season. This wasn't the only time we saw an international player struggle under these rules. Jason Raven moved, and wanted to change teams. Oh no, you can't do that.