If you don't want it bad enough to do whatever it takes, then you don't want it badly enough. The rights and wrongs of it are a different argument, but companies want flexibility, enthusiasm, willingness to help out at your own expense. When you have the big gig and don't want to do that extra flight, Or push the aircraft in, then fair enough (and even then in this climate I'd think twice about that, but any decent salt would certainly be helping push the bus back in).