For ancillary roles, sometimes they do use contractors. However, for code that needs maintenance of any sort, it makes a lot more sense to bring the expertise

For ancillary roles, sometimes they do use contractors. However, for code that needs maintenance of any sort, it makes a lot more sense to bring the expertise in-house. Maybe it's more expensive in a myopic sense, but by being able to retain an individual that already has context (not to mention, who was also probably hired with a higher hiring bar) has more gains in the long run. Just think about all the companies that tried to outsource to India or China in the 90s/00s and got bit.