It's of course monetization. Everyone jumped on giving away their content via RSS/public APIs in the early rush to web2.0 style standards, then of course retrea

It's of course monetization. Everyone jumped on giving away their content via RSS/public APIs in the early rush to web2.0 style standards, then of course retreated from that position when it became clear directing eyeballs to the actual site and keeping those eyeballs there for as long as possible was required to maximize ad revenues, especially for sites giving away written content. The only full content feeds that really survive are the occasional blog or site that offers it as a bonus to paying subscribers.