For your comment to be enlightening, you need to explain the (apparently) special legal definition of "property" you have in mind (you did explain "monopoly"). Then recognize, that while lawyers have these special definitions for the same reasons programmers do, it isn't what the authors meant by "property".
That said, I do wish the phrase "intellectual property" would disappear from layman discussions. Even laymen should be able to see that patents, copyrights, and trademarks are all different programs with different problems.
Musicians don't get much when the record company finances their production. When you produce your own (using open source software and less expensive hardware - a good condenser mic is $500, but other stuff is pretty cheap), you can get 50% of gross: http://magnatune.com