On the other hand, I believe that competition, broadly construed, is the root of evil (competition is for losers). The more we can not compete with each other, but rather support each other in our own personal endeavors, the better.
There is certainly harm here, but I agree it's not all about competition - if the incumbent shares their knowledge and resources with others then, while revenue streams might go down for, more people will benefit and as a whole revenue streams will go up, or at least be distributed more fairly.
In a zero sum world, companies either avoiding competition or sharing is a burden, in a non zero sum world it is not.
I think ultimately the author is wrong - the idea that ideas can endlessly reap, it ignores the physical world - there are only so many available acres of land and goods at any given time. He dismisses Peak Oil, etc as a misunderstanding about the limits, but the reality is there are many limits, each one with different consequences as it is passed. Thinking the edge of the city is a block away and then discovering you were wrong is not proof that there is no edge to the city, but it does matter that you have to take a car versus walk a block - the limits are still there.
Arguments about peak resources should focus on the average income pressure a citizen is facing, an infinite number of ideas does zip for you if your citizens are too poor or in debt to be able to purchase the fruits of your ideas. Unless you want to start giving away money at a steadily increasing rate...and that has never worked out.