Owning an NFL football team is a hobby, not an investment. no more than racing competitive RC cars is an investment. If you or I go out and buy a $5000 dollar RC car for competitive racing, you gotta face the fact that you might crash it. Yes, you might win 10 grand if you win the championship but you also might just as easily crash the RC car. And be out 5 thousand dollars.
If you are in a hobby for return on your investment, you're done before you even get started.