The missing elephant is that our governments are the biggest rent seekers of all.
The article rabbits on about rentiers without once recognizing who ultimately owns all the land and sets all the rules.
It mentions Georgism which to an approximation is replacing private rent with public rent.
Georgism doesn't actually solve the problem of rent seeking it just changes the seeker.
I have a personal theory that governments love to have capitalists to blame for the rent capture of the government. I see the pattern again and again e.g. mortgage interest e.g. electricity bills by state-owned companies in New Zealand e.g. how taxes (GST) and fees and regulatory costs get oncharged to everybody (yet the invoicer gets the hate).