A Smarter world.
I think this is great and I believe that not only is this possible but the groundwork has begun. There will always be jobs, just different jobs. Maintenance of the robots, material acquisition, etc. As far as patent infringement goes, it's only if you are selling someone else' work that this applies. If you make it for yourself than there is no problem. I agree that not everybody will be able to create, but the tech is here on a small scale and will be on a much more evolved scale in the near future. There is a web site called "Instructables", it is amazing in it's variety of DIY(do it yourself projects). All the direction is there, what tools and material to use, etc. People by and large are creative and I think that there will be ground-breaking discoveries made in the near future, from people who did not pay a fortune to go to university. Society will decide the direction it wants to go. Free the mind and anything is possible.