This is also a difference between an ideologicopinion piece with a "Ive told you so" and "Markets are bad " to an scientific review.
How much should the essay be expanded? Surely we don't want a 1:1 scale model of reality. We probably should not factor in the conductivity of water and compare against the cost of 1 liter of milk; although if I wanted to attack the integrity of the essay I might lament those factors' absence.
Snark aside, I like that the author chose to compare Switzerland, Germany, and the US. It elegantly illustrated the similarities and differences.
Sorry this debate is getting weird and boring. Have a nice day.