I cannot help but look at this along with Facebook's copy to win strategy. It appears to me that FB might be using their open source contributions as a Trojan

I cannot help but look at this along with Facebook's copy to win strategy. It appears to me that FB might be using their open source contributions as a Trojan horse to make sure others can't compete with them. If a startup happens to use FB open source tech for their startup, FB can duplicate everything they do, even legitimately patented stuff, and the startup is unable to fight back because their sign up page happened to be built in React. This is giving just too much power o one company.