This is the problem of the commons in its classic incarnation. If the private offices are shared, pretty soon you will have people either squatting in them or accusing others of squatting.
Open layouts are a way to save lots of money per employee. They provide no tangible benefit over private offices that are big enough to have coding sessions in, but they cost a hell of a lot less. Next time someone tells you that they are more productive in an open layout office ask them if they had ever worked with an engaged and energetic team where everyone did have large private offices. Chances are, they did not and therefore have no basis for comparison.
Open layouts are a way to save lots of money per employee. They provide no tangible benefit over private offices that are big enough to have coding sessions in, but they cost a hell of a lot less. Next time someone tells you that they are more productive in an open layout office ask them if they had ever worked with an engaged and energetic team where everyone did have large private offices. Chances are, they did not and therefore have no basis for comparison.