Stadiums are projects with low contributor growth and high user growth. While they may receive casual contributions, their regular contributor base does not grow proportionally to their users. As a result, they tend to be powered by one or a few developers. Many widely depended-upon packages and libraries fit into this model, including webpack, Babel, Bundler, and RSpec. Stadiums are becoming increasingly commonplace today. In a stadium model, one or a few maintainers make decisions on behalf of a broader user base. Unlike a federation or club, whose communities are decentralized, a stadium’s
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