Intellect is not property for the same reason gas in the tank is not velocity.
The fact that you invested time and effort grants you nothing. You need to put your foot on the gas for there to be any useful work done by your vehicle.
There's a million things I'm INSPIRED to do without pay. The profit is in the accomplishment of the task which gives me and millions of others instant benefit. Benefit I'm doing it for in the first place.
The most important reason to be against intellectual property is the surreal precedence and phenomenal power the IP cartel has in comparison to those who actually create tools and implement ideas.
If you want money for your ideas, convince someone who builds things to hire you. Implementation gives value. That idea you had on the john is not valuable in and of itself.
Your investment of time is only as valuable as the value you demand versus what others are willing to provide.
+1. I like your logic, and I like your analogies.