Most of the Golan Heights was occupied in 1967, and annexed in 1981 (in a move that most of the world still does not recognize as legitimate).
As far as I can tell, the settlements being discussed are still in that region, not the newly occupied region.
Renters are not that captive of customers. Once it becomes a common amenity, renters will start considering it as part of the rent when deciding where to live. Just like they do with utilities, garbage collection, and other amenities that landlords can charge for outside of base rent.