# Literature verification notes

Verification date: 2026-08-14.

1. Bass, F. M. (1969). A New Product Growth for Model Consumer Durables. Management Science 15(5):215-227. DOI 10.1287/mnsc.15.5.215.
2. Brynjolfsson, Hu & Smith (2003). Consumer Surplus in the Digital Economy: Estimating the Value of Increased Product Variety at Online Booksellers. Management Science 49(11):1580-1596. DOI 10.1287/mnsc.49.11.1580.20580.
3. Brynjolfsson, Hu & Simester (2011). Goodbye Pareto Principle, Hello Long Tail: The Effect of Search Costs on the Concentration of Product Sales. Management Science 57(8):1373-1386. DOI 10.1287/mnsc.1110.1371.
4. Brynjolfsson, Hu & Smith (2010). Long Tails vs. Superstars: The Effect of Information Technology on Product Variety and Sales Concentration Patterns. Information Systems Research 21(4):736-747. DOI 10.1287/isre.1100.0325.
5. Brynjolfsson, Chen & Gao (2025). Gains from Product Variety: Evidence from a Large Digital Platform. Information Systems Research 36(4):2298-2308. DOI 10.1287/isre.2023.0410.
6. Reimers, Riedl & Waldfogel (2025). Information and the Welfare Benefits from Differentiated Products. NBER Working Paper 33401. DOI 10.3386/w33401.
7. Peres, Muller & Mahajan (2010). Innovation Diffusion and New Product Growth Models: A Critical Review and Research Directions. International Journal of Research in Marketing 27(2):91-106.
8. Preference-heterogeneity/platform-adoption literature is used as adjacent support for heterogeneous consumer demand and is not treated as establishing AMNESS audience-capacity constructs.

Boundary notes:
- Effective Audience Capacity, Hard Addressable Audience, Quality-to-Capacity Elasticity, Niche-Locked Excellence, Audience Expansion Operator, Massification Cost, Discoverability-vs-Audience-Ceiling diagnosis, and AMNESS-AC are proposed constructs in this paper.
- Audience Capacity Bound and Mass-Success Impossibility Corollary are direct consequences of user-level adoption-probability bounds under the stated unique-adoption model.
- The Niche-Lock Ceiling Theorem is conditional on the addressable audience set remaining fixed above Q0.
- The Long-Tail Aggregate Value construction is a set-theoretic existence result, not an empirical claim that niche audiences are disjoint in real markets.
- Long-tail literature supports the empirical importance of niche products and lower search costs; the paper does not claim that long tails eliminate superstar concentration.