Anchor Sponsor Firms in Open Source Software Ecosystems
Brigitta N\'emeth, Johannes Wachs

TL;DR
This paper studies how Mozilla's role as an anchor sponsor influenced the Rust open source ecosystem, showing that Mozilla's exit caused a significant decline in activity, especially among less-embedded developers, raising sustainability concerns.
Contribution
It provides empirical evidence of the impact of anchor sponsors on OSS ecosystems and introduces an agent-based model to replicate observed dynamics.
Findings
Mozilla's exit caused a 9% drop in weekly commits.
Less-embedded developers reduced activity after Mozilla's departure.
Post-shock slowdown in new developers and projects.
Abstract
Firms are intensifying their involvement with open source software (OSS), going beyond contributing to individual projects and releasing their own core technologies as OSS. These technologies, from web frameworks to programming languages, are the foundations of large and growing ecosystems. Yet we know little about how these anchor sponsors shape the behavior of OSS contributors. We examine Mozilla Corporation's role as incubator and anchor sponsor in the Rust programming language ecosystem, leveraging data on nearly 30,000 developers and 40,000 OSS projects from 2015 to 2022. When Mozilla abruptly exited Rust in August 2020, event-study models estimate a negative impact on ecosystem activity: a 9\% immediate drop in weekly commits and a 0.6 percentage point decline in trend. We observe an asymmetry in the shock's effects: former Mozilla developers and close collaborators continued…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsOpen Source Software Innovations
