I'm all in favor of studying fine arts, but this isn't quite accurate: advertisers (i.e., brands who run ads) rely on people with arts and humanities training—it's not a coincidence that the smallest unit of advertising is called a "creative"!
While it's true that the individual employees creating ads probably studied the arts in some way or other (not necessarily fine arts; "graphic design" is a major not generally included in that category that would absolutely fit an advertising creator), the people who actually run them probably studied either STEM, or, even more likely, business/management.
But adtech (i.e., the infrastructure underpinning digital advertising) is all data and code, nothing artistic at all. Check out any RTB spec: https://github.com/InteractiveAdvertisingBureau/openrtb2.x/b...