care to explain what you mean?
richard stallman may disingenously call the copyleft licensing as "idealist pragmatism" but it has nothing of idealism. It is a materialistic approach through and through, they studied the current intellectual property laws and designed the copyleft license to use intellectual property laws for their goals!
open source =/= free software, richard stallman extensively wrote about this. i think you may be confusing open source with free software.