Because I've worked at no less than three companies that have done exactly that, and the entire basis of the article talks about the monetary value of how you c

Because I've worked at no less than three companies that have done exactly that, and the entire basis of the article talks about the monetary value of how you can move hours around, completely eliminating the human nature of work and craftsmanship. People who work on projects that they aren't going to be associated with in the future usually care less about quality. Working colocated is only one facet of the equation. I would think ownership is a well understood concept in the startup industry. Being invested means more than being colocated or even having a financial stake. (open source development -- again, some small number of passionate developers generally in it for the long haul)