Because building a production-ready video editor is far harder, and far more expensive than most teams expect. Most people start thinking they just need a timeline and a renderer, but then they run into browser memory issues, playback desync, rendering pipelines, uploads, trimming logic, captions, exports, cloud rendering, media processing, performance problems, and suddenly months disappear.
Even with the latest AI models, you still end up owning and maintaining a huge amount of complex infrastructure. That's usually the hidden cost. It's not just building the editor, it's supporting it long term once real users start uploading large projects and expecting everything to work reliably.
React Video Editor gives your team a foundation that's already been through those problems so instead of burning engineering time rebuilding infrastructure, you can focus on the part of the product that actually makes you different.