And if the cable connector is strenthened, the next weak link of the chain is the connector of the device, which is surely a lot more expensive than the cable.

And if the cable connector is strenthened, the next weak link of the chain is the connector of the device, which is surely a lot more expensive than the cable. I've broken micro-USB connector on phones that had no structural support for the connector at all. It was just hanging by the solder on the surface-mount data and power pads.