The big old churches expanded in time and soon they were fixing the entire roof, reworking the plumbing, and installing a new furnace. One furnace guy charged $40,000 to fix the furnace and tore it to pieces. No one could figure out how to put it back together, so the congregation dissolved. They continued to gather for some time, to discuss what happened.
Each congregation can now send the service to everyone's home rather than getting people to the aging church building, especially during bad weather, pandemics, and fake pandemics. The Mother Church is often a high crime area. If not, the travel time can be a problem because of distance.
One tiny sect has the goal of grabbing the ownership of congregational properties, which can be done by changing the parish constitution and playing various games.