GNU Founder Richard Stallman speaks on software freedom and "free" software back in 2012. He speaks about how proprietary software controls users and "free" software is controlled by the users. I think it is a really an eye opener about how we are tricked to use corporations and let corporations use us.
It must be noted that "free" software does not necessarily mean it's gratis, rather it gives the user freedom to change and redistribute by one condition that it is "free".
Check the video here:
Let me know in the comments below whether you believe in "free" software world or happy with the proprietary software.