He does, but I dunno—my dad's not a very good businessman, to be honest. It's difficult for him to pay for all the bills and pay all of us regularly. My brother kind of gave up asking for regular paychecks; me, I was persistent for years and finally gained access to my dad's checking account, lol. (My account is linked to his, so it's a simple click of a button for me to get paid.)
So, I guess it kind of makes sense for him to expect food, because the way he makes up for not getting paid what he earns, he just figures that's taken out of his paycheck—food, rent, and that. I probably shouldn't be complaining myself, because his situation sucks, lol.
But, if it really bothers him, he could always go find a different job and then buy things. I've asked him before why he doesn't, and he says it's because he likes the amount of free time he's given. Makes sense, but if your situation's shit when you could clearly fix it, there's not really much a reason to complain.