You assume anyone with a ATP is desired by airlines. That is not the case. The lesson on not hiring anyone qualified on paper is getting hammered home at the airlines every day at the moment . If you have the hours and ratings and a solid background both in training events and your non flying life you will get hired almost instantly. If on the other hand you were a C student in high school, a dubious work history with no college and 2 or 3 training failures you will find it hard to land a good flying job.