Apple can disable most everything that was stolen
Intelligence isn’t “their” strong suit…
Leave them enabled to track the thieves and then unleash the robotic Richard Simmonses on them.
A typical Apple Store has almost all merchandises locked up in a secure storeroom in the back. Consumers can play with the "demo" merchandise in the store but when they decide to buy, their purchase is retrieved from that storeroom.
No doubt that the demo products were pretty much bricked by the time the thieves got out to the parking lot.