What you have to remember is that we at airline Y are doing everyone else including ourselves a disservice by not refusing our employment at airline Y in order for the pilots at airline X to make things better for us all.
In all seriousness, all airline employees do the same job, just for different companies. Those companies while having a professional respect for one another (to an extent) are fiercely competitive. Almost everything about our industry is a numbers game. And that drives the competition. The same is true of the pilot groups of said airlines largely because our livelihood (read, seniority...numbers) are tied to it. And this is what makes it personal, eventhough it really shouldn't be.
Im happy to report however that the mainline guys of my company's parent have been nothing short of professional, friendly and more than accomodating when I ask for a ride home or to work...each and every one of them without exception.