They don't have much in the way of personal assets - i.e. they're not millionaires.
In addition to what others have said, they are waited on hand and foot in all matters - free of charge. Someone does their hoovering. Someone cleans and irons their clothes. Someone serves them food, then washes their plates afterwards. They have access to the best medical care, funded by the WTS. They have free travel, usually first class. Just about the only things they do for themselves is brush their teeth and wipe their backsides.
Also, lots of brothers are eager to wine and dine them, perhaps also giving them 'green handshakes' or gifts.
They are also almost constantly fawned over. Their collective ego must be gigantic.
Nice work if you can get it.