Is it? I would really like a reference for that claim.
Maybe you're confusing the free time that developers have because of their corporate jobs to create FOSS, but this is not the same as directly writing and paying for FOSS by corporations.
This gets complicated because are you talking about volume of code created or are you weighing code by its use? Anyway, you might be right, I don't know, but my assumption is that FOSS is mostly developed in spite of lack of corporate resources, not because of it.
Maybe you're confusing the free time that developers have because of their corporate jobs to create FOSS, but this is not the same as directly writing and paying for FOSS by corporations.
This gets complicated because are you talking about volume of code created or are you weighing code by its use? Anyway, you might be right, I don't know, but my assumption is that FOSS is mostly developed in spite of lack of corporate resources, not because of it.