I still don't see the problem.
If a (non tax supported) company wants to deny bicycles from a certain are then they have every right to.
If the company actually wants your money then they will make accomodations.
My bank allows me to go to the drive thru, but if they chose not to it's not like I'd throw a girly fit and start composing letters to the paper about it. I'd just get off my bike and walk inside and take advantage of their free coffee instead.