Companies with lack of time and a bigger budget always opt for professionals if they don’t have an in-house department.
Professionals always do it better, that’s only normal since they are the specialists and will provide you with the best results!
Going back to the wine shop example, you are specialized in red, white, or even rose wines you might not be able to manage a camera, microphone and then on top of that editing everything.
For video producers their wines are the microphone, the camera and all that comes with it!