I think it would be ok if they were charging for _some_ of the content. Docs could stay free and they could charge for development courses. They could even make

I think it would be ok if they were charging for _some_ of the content. Docs could stay free and they could charge for development courses. They could even make introductory courses free and charge only for advanced topics. Another example - browser compatibility matrices. They could be free just for the current versions of browsers and you'd have to pay for historical and future (i.e. development versions) data. I think it's possible to find a balance between making the essential knowledge free so newcomers can join the industry and charging those who already have a source of income. I know that 5$/month can still be too much in some parts of the world, but this could be addressed with regional pricing.