I am not aware of Android and Kubernetes being leaks, they were open source from the start. For Android, openness was a big marketing point. I am not aware of IE leaks, and if there were leaks, hackers searching for exploits would be probably be the most interested, and that would be a bad thing for Microsoft.
The problem with leaks is that they don't come with a license, you don't have the right to use them for any legitimate purpose. No one who could afford a 250k/year license would touch that leak as it could get them in big trouble.
The problem with leaks is that they don't come with a license, you don't have the right to use them for any legitimate purpose. No one who could afford a 250k/year license would touch that leak as it could get them in big trouble.