Why does open access make publishing more complicated?

"Open-access publishing is going mainstream. This is sometimes a requirement, but it is also perceived as complex. That’s understandable, considering that OA comes in so many definitions and shades; gold, green, platinum and diamond journals and more shape a moving landscape where different stakeholders push their own agenda.

For researchers, navigating this landscape requires consideration of costs, funding, licences and copyright issues. All these aspects are relatively new compared with the traditional subscription-based system, where researchers would not worry about subscription costs any more than libraries would care about the details of the reviewing process. Redistribution of tasks along the publishing process forces universities and institutions to reorganise their support system. Who can and who should help? And how to do so? ..."