Well, I don’t know about people generally speaking but in my case, I have been able to get a couple free food donations for, yes, my measly web series. It all depends on how you frame it and sell the idea/yourself. It isn’t about them getting rich and famous by being in the credits of some random web series but showing gratitude. It wasn’t like the lure of the credit was so strong they had to say yes but it was just a gesture of “hey, thank you so much for supporting your local arts community, the least we can do is put your name in the credits.” They are giving you free food because you are asking nicely, have a passion for what you are doing and clearly are a small crew not taking advantage. Being a small web series actually helps your chances as no small business is going to want to give like 100 pizzas away to a massive Hollywood crew shooting a TV show, as they could clearly afford it. But like 3 pizzas to a crew of like 5? That’s something they can think about. Also, you are going to get a “no” like 9 times out of 10 but the more you ask the more comfortable you feel doing it.