Not really a good comparison. In modern times, a smart phone is a basic necessity and can be that persons only connection to their friends, family and work opportunities. A digital sign in the lobby of a school doesn't hold nearly the same utility.
Not in the 00's when I went to high school. It was for some alt education program that never happen, so who knows how much background cost there was that was wasted.
Also, to many poor schools always seem to fine the funds for their after school sports programs