A $1T founder is rewarded for building a massive system that employs hundreds of thousands of people, moved technological progress forward dramatically, and has positively affected the lives millions.
A doctor provides life-saving care, but they are physically limited to helping one person at a time. A backup NBA forward might not save lives, but their work is broadcast and monetized across millions of screens at once.
Arguing that entertainment is "non-productive" ignores human nature. People gladly pay to be entertained. If sports have no value, do you feel the same way about books, art, and movies?