The Economics of Builder Saturation in Digital Markets

TL;DR

This paper models how increased digital production due to AI reduces individual attention and returns, leading to concentrated markets with few dominant players despite more producers.

Contribution

It introduces the Builder Saturation Effect, combining established theories into a unified framework to analyze AI-driven entrepreneurial dynamics and market concentration.

Findings

Increased producers dilute individual attention and returns.

Market outcomes tend toward concentration and power-law distributions.

AI-enabled democratized production intensifies competition rather than broad success.

Abstract

Recent advances in generative AI systems have dramatically reduced the cost of digital production, fueling narratives that widespread participation in software creation will yield a proliferation of viable companies. This paper challenges that assumption. We introduce the Builder Saturation Effect, formalizing a model in which production scales elastically but human attention remains finite. In markets with near-zero marginal costs and free entry, increases in the number of producers dilute average attention and returns per producer, even as total output expands. Extending the framework to incorporate quality heterogeneity and reinforcement dynamics, we show that equilibrium outcomes exhibit declining average payoffs and increasing concentration, consistent with power-law-like distributions. These results suggest that AI-enabled, democratised production is more likely to intensify competition and produce winner-take-most outcomes than to generate broadly distributed entrepreneurial success. Contribution type: This paper is primarily a work of synthesis and applied formalisation. The individual theoretical ingredients - attention scarcity, free-entry dilution, superstar effects, preferential attachment - are well established in their respective literatures. The contribution is to combine them into a unified framework and direct the resulting predictions at a specific contemporary claim about AI-enabled entrepreneurship.