Some of the best things in life are commercial and still have a phenomenal impact on humanity... I understand why people might be wary, like if the Khan academ

Some of the best things in life are commercial and still have a phenomenal impact on humanity... I understand why people might be wary, like if the Khan academy suddenly opened up premium memberships, but this course was never designated as a non-commercial concept (though it was very much billed as a 'beta') A bit of amateur Google-sleuthing doesn't really amount to a groundbreaking piece of news, in my opinion.