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Defining Aggregators
This means that for aggregators, customer acquisition costs decrease over time; marginal customers are attracted to the platform by virtue of the increasing number of suppliers. This further means that aggregators enjoy winner-take-all effects: since the value of an aggregator to end users is continually increasing it is exceedingly difficult for c... See more
Stratechery by Ben Thompson • Defining Aggregators

This is the Aggregator’s advantage: particularly when it comes to media, whether it be print, video, or audio, suppliers are often motivated to simply reach the most people and make a living doing so. It is a fundamentally short-term outlook that is entirely understandable and defensible. That, though, leaves the Aggregator with an arbitrage advant... See more
Ben Thompson • Spotify’s Podcast Aggregation Play

Ben Thompson described this phenomenon in his signature aggregation theory. Pre-internet, you captured profits by controlling supply. Now, post-internet, you capture profits by aggregating demand.