It definitely depends heavily on the market you're living in - some are very heavily subsidized, others are not. As a counterpoint, I recently had a $30 off promotion for uber eats. Ordered a couple of hamburgers, and the food tab came to $29 - which was zeroed out after the promotion.

Delivery fee + service fee + tip meant I still ended up paying $18 for the service. I can't imagine I'd ever be a buyer at the full price.