the issue is not the airlines its the "handlers". The airlines go out to tender and pick the "best response", its the handlers that offer the prices to the airlines.
You have to question why they are offering below cost pricing and I know the commercial staff will say that its market rate and they have to offer it but regretfully Aviator have recently shown where this leads to. If an airline pays more then they will effectively subsidise the carriers that are not paying that rate. the exceptions to this seem to be the ME3 who have a set Service Level Agreement and station management to ensure that these standards are adhered to.