Surprisingly, not always. Ask your actuary or an economist.
On a more individual scale, many of us are not spending their every waking moment doing their utmost to save lives - did you have a lunchbreak today ? - showing through revealed preferences that lives are not as valuable as commonly claimed in public speech.
In London "Hatton garden" has the highest crime rate due to all the jewellers and smash and grab raids using scooters.
IMO, protecting extraordinary events is fine. And it is in our public interest to have safe extraordinary events, like big sports events, concerts, protests, etc.
How does the police draw the line on what work to accept?, do you apply and then a committee decides?
Can a police officer do this after his/her regular job?
Laws for "peace officers" don't have a start time and end time (ie 9-5), they are police 24/7.
Or let's just avoid all these stickey edge cases and say "if you can pay xyz / officer / hour they will guard your event,stuff etc.
The difference between the NFL game and the movement of goods is the number of benefactors. Many, many people want to see the game, thus it is easier to argue it lies in the public interest (public interest is not only a majority, btw.). If that movement of goods happens as often as an NFL game, I would argue it should be paid by the companies that profit from said moving. Now, if that company acts in the public interest (e.g., the goods are meant to supply the residdents of the city), things might change again.
Not allowing police to protect it might get you some real dysfunction.
(PDF) - http://www.nyc.gov/html/nypd/downloads/pdf/public_informatio...