I think there are too many proprietors out there that have the "It's your league, do what you want as long as I am getting my 33 weeks of linage" attitude.
Leagues need to do what they want. There are league rules and regulations that need to be followed and voted upon by the members. I can see most proprietor's not wanting to deal with that.
The proprietor's responsibility is to have lanes available for league, and work with the league arranging pre/post bowling. With most centers having a computer system, I am sure something can be worked out with the proprietor about keeping scores, setting up a schedule for the league, and keeping track of averages.
In my opinion, all other league business needs to be done by league members, especially the Treasurer duties. It takes no effort at all to create a bank account and deposit money into it.
Don't get me wrong there are some proprietors that manage leagues and do it well, I just think that is the exception.