Several PPs have commented that the driver missed out on additional tips by driving to the OP's workplace instead of taking several shorter trips or a trip with multiple deliveries. However, the OP said:
Ray spoke to a lady at Awesome Takeout and asked her if they would deliver to our work. She agreed as long as they order over a certain amount. For the last few weeks, coworkers have been ordering from Awesome Takeout.
If I were the customer, I would assume that meant that an order of at least X amount was a large enough bill to make up for the extra time and distance for the delivery.* If the minimum order is $X, then I assume an $X order takes up similar time and resources to several smaller orders of $Y that would normally be served in the same time. Since the tip is a percentage of the bill, it would increase accordingly to compensate the driver. It's possible that the restaurant calculated incorrectly, forgot to account for traffic delays, or considered only the impact on the kitchen rather than the driver (but then why would the distance matter at all?). All unfortunate errors, but not something the customer should expect to account for. The customer asked "Do you deliver here?", was told the conditions for doing so, and met those conditions. If those conditions don't adequately compensate the driver, then that's something he should take up with his boss.
*OP, can you give us a ballpark cost for a typical one-person order from this place? I'm curious how much the minimum order for 10 miles differs from a typical order. Do they have minimum order for normal deliveries (within 3 miles) or a delivery fee of some sort?