If an activity (particularly one like writing books) creates value for people and yet somehow people engaged in that activity can't get paid, that might deserve a closer look than "many things are just not profitable." Or a better comparison than to a hypothetical personally recreative activity like licking grass.
And makes you think if it would or should go the same way of other non profitable but socially valuable activities, by the hands of non profit foundations and/or government support.
And if that would be a better or worse model than the current one.