Don't forget that they have taken ownership of many of the assembly halls directly.
Previously they were built using the money and skills sacrificed by well meaning sheep. They were maintained and paid for as separate entities by fleecing the same people that built them. It's like buying and owning your house, selling it to a landlord for nothing. then paying to rent it.
Now, we don't even get to visit it, we just pay rent to keep it empty.