The comment literally devoted a paragraph to that.
Private ownership becomes more and more challenged these years. The original comment is set in Denmark. I am also Danish, and I can verify that we have another view on ownership than what you experience in the US.
I'd argue that, since there's a limited amount of useful - domain-wise - words in the English dictionary, the number of available domains are bound to run dry faster if domainparking is not discouraged somehow. One might argue that the new TLD's are merely a 'bandaid' on a systemic problem with domains not being released properly, when no longer in proper use.