It's not clear at all that this is the case. TMU apparently only paid for the costs associated with the renaming, with some extra margin above the hard costs to the TTC and City (but what about the soft costs?). And we are lucky that the cost of new maps on the subway cars etc... was likely fully mitigated by delaying it to coincide with the Line 5/6 opening map change. Otherwise, the new map costs were apparently not accounted for initially. What that extra margin is for, if any, I doubt will make much of a difference. The contract is in the low single digit millions. 1 million gets you track maintenance for 1 year for less than 1 km of track.