Maybe I'm misunderstanding the license terms but I feel like this is a bit of a "Maserati Problem", at least, if you are not competing directly with Facebook. I

Maybe I'm misunderstanding the license terms but I feel like this is a bit of a "Maserati Problem", at least, if you are not competing directly with Facebook. If you are worried you might want to sue Facebook for patent infringement some day, you could still use React today and switch to Preact or some other library "just in time".