Earlier quoted context omitted.
The ad space exists and the city owns all the ad space. They either get in the business of pricing it and selling it themselves, or they contract that business out. In this case, a condition of the contract was you have to pay for the bike scheme.
So the possibility that the space remains ad-free doesn't exist? Everything is a choice, we don't HAVE to accept these shitty ads everywhere.
Yes, it's a trade off. I wish my city had free bike share.