How do patents support free enterprise

They prevent corporate espionage and stop large companies form stealing peoples inventions. It allows individuals to sell things exclusively, and not get crushed by the competition from huge corporations.

in this scenario it would be the consumer demand as most influential in making the decision. the band members need to figure out where and from whom they will make the most money, in other words who out of the two consumer groups - football fans or car drivers - will spend their money, who is more likely to contribute to their cause and buy what they are offering.