I think this is a case of unrealistic expectations. I don't think your employer or building management has a duty to provide you with secure indoor bike parking. They don't do that for cars either, do they?
Especially if it as a fire hazard or safety hazard don't expect them to give in to your 'demands'.
One option would be to convince them that indoor bike parking scores major brownie points towards a LEED certification. If you are in a big city like Chicago thay may work, because the LEED certification rubs off on the Mayor. (Hey! Look! We are a green city!)
Duppie