Profiler "What changed" loses context on long render histories — sticky/anchored inspector

Profiler "What changed" loses context on long render histories — sticky/anchored inspector targets a $9.0B = 25M front-end developers x $360 ARPU/year on tooling & extensions total addressable market with medium saturation and a year-over-year growth rate of 12% annual growth (developer tooling + frontend observability).

Key trends driving demand: Frontend complexity growth -- more client-side state, hooks, and concurrent/reactive patterns increase profiling needs; Shift-left debugging -- teams want faster local debugging; devtools become part of CI/CD and dev experience stacks; AI-assisted developer tooling -- summarization and root-cause hints reduce cognitive load and triage time; Observability convergence -- frontend profilers and backend APMs are integrating, creating demand for edge-focused insights.