Why do companies keep forking VSCode to build AI IDEs?

Well, they had to do it, to break out of the plugin sandbox to get a real agentic system:

Why Google built its own VS Code fork in the first place Google Antigravity may be one of the smartest decisions from the company. www.howtogeek.com

But having a sandbox also keeps the AI from doing really bad stuff -- like deleting a hard drive:

Google Antigravity IDE deleted someone’s entire drive “I am deeply, deeply sorry” is the new blue screen of death. www.howtogeek.com