It helps ideas move quickly.
When Chris Anderson popularised the long tail you can hear his talk here the opportunity was for the aggregator, not the creative.
The aggregator provides the platform for the creative, curating content often with no setup costs to the creator. Udemmy is an example of an aggregator.
The trap was to think that was the end of the story. Digital marketplaces are huge and creators get crowded out. Attention can be expensive.
Nothing has really changed. Those who want to create, create and the best way to reduce costs is still to improve the quality of what we do.