Airline Baggage Regulation / Flying with Bikes

Hi I noticed that a lot of the airlines including BA and easyjet are stating that the bike needs to be in an appropriate bike box. The way I see this, you can no longer get a card box from you local bike shop? If anyone know differently please correct me.

Emirates were totally fine with me using a cardboard bike box.

The Mildura VLine bus driver cockfuckwit wasn't though but their policy apparently prohibits all cardboard packaging even though other cunts were allowed to have open plastic shopping bags in the luggage hold. Thanks for adding another 3 hours onto my journey you fucking truckie wannabe.