I'm curious where this info could come from. Like, cars? The quote I heard from one GA (in a newspaper) was "you give them your life, and they give you a car." I once or twice rode in a Church-owned pool car to go to software-dev meetings in another city. And private jets? I read that the late (and wealthy industrialist) Jon Huntsman loaned his own jet to Pres. Hinckley some during those years (for his travels as President to visit Church members across the world), and maybe after, but calling it free use of "private jets" etc., seems exaggerated (but, for all I know, maybe there is one, and maybe they use it, but I'd be very surprised if there is a "jet pool", and any such thing is not used for pleasure outings. These men have a heavy, hard work schedule until they die, with Mondays off and 2 weeks a year, if I understand correctly. Monson did say he had a home in Midway (? I think: Heber Valley, a gorgeous area), but I doubt the Church owned or bought it. Like, I've been around these people some, and read much, and the tenor of what you are saying just doesn't ring true. One person I know, had some occasional interactions over time, was a GA, and he is
definitely not rich (others in his family, also not rich, were offering to pay for new tires for his car, to get him safely back home safely from one reunion, as the tires they saw worried them. Maybe I shouldn't have said that as it was really not my business, but I was there, talked with my dad and/or mom about it, and what you are saying ... just doesn't sound right.)
And how do you know that about free university (and any of it)? I'd be surprised. I'm not asking for a zillion citations, but, I'm skeptical.
Edit: And free use of "private homes"? No idea what you could mean there, unless it is the condo that the president of the Church lives in for security reasons. Pres. Hinckley, a long-time do-it-yourselfer in his own yard & property, said he lived in a "filing cabinet: a condominium! I don't think people were meant to live in condominiums!".