You miss the fundamental thing which is that the charge is specifically for publishers for a reason. It's because it absolutely is worth 30% to every business who wants to reach a lucrative market.
You are building a perfect argument against Apple here. As DoorDash rates grew I stopped using them less and less and started driving to the restaurants myself. And DoorDash rates are still far cry from 30%.
The argument “would you pay some percent more” is somewhat meaningless because if Apple thought you would pay 40% more they would already be charging that and charging the publisher 30%. Two sided markets mannnn.
I don't think the point is wrong though. You can bypass DoorDash both as a customer (using other service or going personally) and the restaurant (by having online ordering on another platform).
And this is for basic delivery, where many buyers will be a short drive away and could in theory have placed a 1985-style pickup order. There's no captive element like an App Store.
https://s22.q4cdn.com/280253921/files/doc_financials/2021/q3...
If I read this correctly, at least 60% of users stop using DD after 1 year.
Surely they all can’t have monopoly power? Is 15% of revenue suddenly not monopoly power? Would you still feel forced to pay it if it was 50% or 75% or would you just leave iOS?