Parking Tickets are Set
American motorists can know the fine for a parking offense.
They can judge whether to endure the hassle of driving around to find a non offending spot or to just take the hit and be n their way.
For a a commercial entity making a necessary, timely delivery to a high value customer, it is the cost of maintaining that relationship.
If a party had suffered physical injury in the event of a dropped call, then there would be a different procedure for determining T-Mobile's penalties.