Developers are starting to rebuild entire software stacks with AI, not just apps
mobileraj · x · 2026-07-22
A year-long trend toward bespoke software is expanding into the entire stack. The author argues that companies are no longer just customizing applications; they are increasingly forking open-source infrastructure and rebuilding core pieces themselves.
Examples cited include Cursor rewriting SQLite in Rust from documentation and Claude rewriting Bun. The point is that this kind of vertical integration could either become a maintenance nightmare or produce major gains in performance and efficiency. The post frames it as software’s version of vertical integration, with the outcome still uncertain.
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