Lots of large companies are not using React because of the licence. It's just that companies generally don't talk about legal matters like this openly. So you only hear about who is using it, not who isn't.
Often the large companies that are using React have patent cross-licensing agreements with Facebook (or other special arrangements) that make the issue moot for them.
Otherwise, getting your in-house council (or even your board, depending on the situation/risk) to approve of using React with the very broad patent restrictions can be an uphill battle indeed.
Often the large companies that are using React have patent cross-licensing agreements with Facebook (or other special arrangements) that make the issue moot for them.
Otherwise, getting your in-house council (or even your board, depending on the situation/risk) to approve of using React with the very broad patent restrictions can be an uphill battle indeed.