First, I don't believe you are actually addressing the point made above. 'Rent' is a commentary on the intersection of interest with the origin/dynamic of capital acquisition/maintenance. A more software relevant example would be in the question of what qualifies as rent now that software is making the final transition to Public Good status.
As far as I can tell, m00t has an idea that rent is paid by originality - see the 4chan cancer problem. Linus feels that rent is paid by people that choose to find their own interest in his company. Taco apparently thinks rent is paid by not abusing his board too heavily. All of these forms of rent have other facets that result in income - the evolution of content through distributed action, large scale data sets demonstrating patterns of attraction, the reputation/rank/tradition that establishes advertising desirability.
On the IP side of things a more accurate translation to real estate terms would be that your $100,000 home improvement only costs that much because of collusion between the builder, the material suppliers, and the governing authorities. IMHO the IP players are price fixing in an attempt to keep their industry from collapsing into Public Good status. I can prove this by the fact that the cost to infringe upon a lot of IP is sitting down in front of your computer and programming something in an obvious way, then finding out via a lawyer that you have violated IP rights. With a cost of infringement that low the IP is demonstrating its invalid nature.
Until I really got involved in Linux I was more tolerant of tech IP. When your base OS is only a suggestion of packages that work well together, and it is your job to customize the computer, you end up realizing just how many patents you are violating with nothing more that custom configuration of existing libraries and basic knowledge common to the field.
Long story short, Rent becomes a metaphysical concept where we are going. There isn't much to do about it, people want to eat and more are learning to grow their own every day. Did that even address the point? Not sure. Hope so.