It is not that simple. Content curation and editing is just as big part of publishing as distribution is. Technology has only solved the distribution problem. It still takes lot of expensive human work to select the good quality works and proofread /edit/ peer review them etc before it is fit for publishing in a decent journal.

Ppl are more than willing to pay for legal content if it's in consumable form in a reasonable price point as Netflix and spotify have shown successfully.