This is not quite equivalent.
If you're a sysadmin enforcing a rule, you're enforcing it on someone who is using your system (or the system you are custodian of at least). The equivalent to that would be someone who is renting a drone from DJI, in that instance it's entirely reasonable for them to enforce restrictions on it.
But if you've bought a drone then it's yours. Responsibility for flying it is yours now and there's no real reason for DJI to restrict you any more than an OS which you have bought should prevent you from setting 123456 as your password if you really want to.
That's the theory anyway. In reality I'm much more conflicted about this. On the one hand I dislike the trend for companies to act like they still own the products they've sold us. On the other, preventing idiots from flying a drone over Heathrow is good for air travellers, good for responsible drone fliers (because it might prevent more onerous regulation) and good for the idiot (because it will stop them doing something that will get them in trouble with the law).
Biting the hand that feeds IT
