Interesting article, but this statement is completely opposed to my own experience. I went to Cuba 4 years ago and nearly everyone I met had something running on the side. One guy said that "everyone has two jobs, they job you're given and the job you love" (he was a tour guide who did photography on the side).
I a country where many (admittedly not all) basic needs are taken care of by the state, the people are able to pursue their own aspirations, as the guy featured in the article has done.
"zero incentive" = neo-liberal bollocks.