it's about using the letter of the law to one's own advantage. Apple would be happy to share their inventions so all can enjoy the value... as long as the licenses are followed and the fees paid. Android and most open source software have the same restrictions on obeying the license restrictions, they just don't all use as strict a license or require fees to be paid for usage. Apple never hid their purpose of making money. Open source providers, especially the subset that focus on software freedom, are not any less fanatical about enforcing the licensing requirements of their software than Apple is... just look at any blogger who has ever used a forked package that does not maintain the original author's license. Apple just has the money to back up their fight in court.