True ... but those features are true of any well-defined
membership group ... even families and extended families.
As for mainstream christianity ... well, how rich is the vatican?
If they followed Jesus's word they would have no possesions,
and if they really wanted to help mankind they could sell
off enough loot to support a small country for decades.
Most religions exist in a 'thou shalt not...or else' culture
and claim that donations will aid your route to heaven. The other
benefits are just the hook that all good cons require.