A number of years ago there was building in St John St in the City which had railing protecting a basement area.
The building had a number of companies in it and therefore was used by couriers all day every day, who chained their bikes to the railings, not having the option to go anywhere else, it did no harm to the railings are they were horizontal unpainted pipes
A sign was then put up saying words to the effect of " bikes chained to these railings will be removed"
One Monday we came back to work to find the railings had been removed for the full length of the building and the basement was a 3 meter deep hole on the edge of the pavement.
Apparently a courier had had his bike removed. Not unreasonibly took major exception to them cutting through his lock and stealing his bike, so he had done the same thing to their railings.
It must have cost the building management company tens of thousands to board up the front, tender, design and fit new railings, and the new railings were thick metal planks that you could not get a bike lock around and blocked all the light to the basement.
The companies in the basement moved out over time and the basement area was turned into storage as it was too dark to work down there.
I wonder what the overall cost was for a stupid 'no bike parking' sign. Taken over a decade or so I would imagine a seven figure sum.