Possibly. Since we've yet to see this tried at any scale, we don't know if the contract is capable of staving off the tyrant.
I don't feel ridiculous for being paranoid. I've designed a house that is more bulletproof and also less exposing of the occupants to sniper fire, while still being cozy. I just should have started this a decade ago...
. . . . .and? It's still not fixing a problem that will eventually come through your facade barriers. You're literally proposing what you disrespect about refugees, aren't you? Fleeing for shelter, instead of fixing the issue forcing you to flee for shelter.