Earlier quoted context omitted.
Not only do they steal tips, they also jack up the prices of the food itself. I make six figures and honest to god I have no idea how anyone affords to use DoorDash.
The restaurants, like the grocery stores in Instacart's case, determine the cost of food in their respective apps.
multiple requests asking them to at least fix this info or take me off the platform altogether (because customers were starting to wonder why my prices were so low on doordash - they're not, the couriers paid the current amount in-store...) and they ignored me. it wasn't until i signed up to be contacted about being a restaurant partner that they finally paid attention.
of course, once i registered interest in partnering with doordash, they spammed me with requests to sign the terribly lopsided agreement, and then took my restaurant off as a "bargaining" chip. yeah, okay. works for me.
so, tl;dr, if a restaurant isn't directly partnered with doordash, they can do whatever the heck they want with the prices.
(which, speaking of restaurants setting prices, they all definitely have clauses in there about not charging more than you would on other services. they definitely let you upcharge... i was half tempted to put up burgers for $20 each, for real...)