It's worth bearing in mind that while they certainly make a lot of money, sports teams in Europe aren't primarily run as profit-making entities (they are sporting entities before all else). To the point that the national government stepped in to block a recent move by premier league clubs to form a new pan-european league which would have generated more money, but would have undermined the spirit of fair competition between teams by removing promotion and demotion between leagues.

Another example that occurred to me: I understand that American sports actually have regular breaks specifically to facilitate adverts. Whereas football (soccer) matches have two uninterrupted halves with a single 15 minute break in between.