Firstly Prop firms aren't there to fund a traders lifestyle, especially when they are taking on an unknown quantity. There are plenty of people who have to save up a few grand before they start trading to be able to cover their living expenses for the first few months as they know they won't...
It seems to me that if your friend's there and losing money but still getting paid every month that's not a bad deal for a prop firm. Plenty of them (London based ones certainly) either don't give any form of draw or only enough for basic living expenses.