Are you really taking the Vatican as a role model?
Religions of all sorts don't fare too badly at sucking money out of their congregations, judging by their current worth:
Sree Padmanabha Swamy Temple, 1,200,000,000,000
The Church of Jesus Christ of Latter-day Saints 200,000,000,000
Sree Venkateswara Swamy Temple 35,000,000,000
Catholic Church in Germany 26,000,000,000
Catholic Church in France 23,000,000,000
Catholic Church in Australia 20,000,000,000
Seventh-day Adventists 15,000,000,000
Church of England 11,970,000,000
Church of Sweden 11,420,000.000
Trinity Church, U.S. 6,000,000,000
Opus Dei (part of the Catholic Church) 2,800,000,000 (Italy)
Church of Scientology 2,000,000,000
Or how about these individual "religious" leaders?
Joseph Prince- $5 Million
Juanita Bynum- $10 Million
Ernest Angley- $15 Million
Joyce Meyer- $25 Million
Rick Warren- $25 Million
Billy Graham- $25 Million
Kenneth Copeland- $25 Million
Creflo Dollar- $27 Million
Joel Osteen- $40 Million
Benny Hinn- $42 Million
Chris Oyakhilome- $50 Million
T.D. Jakes- $147 Million
David Oyedepo- $150 Million
Pat Robertson- $500 Million
Edir Macedo- $1 Billion