Green handshakes are a "gift". In the US, as long as the gift is below a certain dollar amount (pretty good sized) then they wouldn't have to report it. I mean, do you report if a friend gives you a gift? It's not a tip.
I've often wondered if there was some shadowy figures pulling the strings but some of their moves are so stupid that I doubt it. I think they simply believe that making money off of real estate ensures a constant cash flow stream that will allow them to continue the religion. It's about survival and I think they realized that 1) Armageddon isn't coming anytime soon and 2) divine intervention isn't going to happen. So, they are simply doing that they feel they need to do to keep it going.
Yeah, the heavies get perks but the biggest perk is the worship of 8 million people and the power trip that comes from controlling people's lives.