Yes, and I would argue that said concept is overrated.
There is also a concept of identifying and bringing in-house critical functions that may or may not be part of the core business. In this case, transportation is a critical function to the team, even if it's not core. At the same time, it provides a means of transporting and keeping "stuff" safe from others - stuff like footballs, for example, that other teams might want to deflate. It might well save some money, especially since some airlines are pulling out of the sports charter business.
https://www.forbes.com/sites/tedree...ix-nfl-teams-including-dolphins-and-steelers/
For an example of the airlines straying from the "core" to bring in-house "Critical" functions, look no further than Delta airlines, which bought a refinery near Philly.
This move might just cost them some sponsor dollars, but is not likely to make much difference on the bottom line.