You are absolutely right. Let me quote it for you, so that you understand the context:
"Harvard Business School working paper... differentiated a platform's openness/closedness by four aspects and gave example platforms".
Then, in the table you can see that in 2 out of 4 aspects Mac OS is a closed ecosystem according to the published research. I am astonished by Apple fanboys who cannot accept flaws in Mac OS, even if it's clearly explained by respectful independent researchers.
>In the parts of the table describing the ecosystem it has the word open in the rows for MacOS.
All four points describe the ecosystem, not just those which you choose. Again, quote: "differentiated a platform's openness/closedness by four aspects".