Those were the only two.
Those were the only two.
Some 28.7% of sites use Wordpress.* Curiously, I've seen the 19% number being cited as 19% of all new websites use Wordpress. I'm not sure how 19% becomes 28.7%, but it may just be that sites using WP stick around longer.
* https://w3techs.com/technologies/details/cm-wordpress/all/al...
Even being on the back-foot when having to defend your patents, by refactoring React out of your application, was apparently damning enough for people to migrate.
If you're ok with trusting a direct competitor not to misbehave, then sure, use React under those terms while competing with FB. But large companies consider their patent portfolio to be a significant strategic asset, so it shouldn't be surprising that their legal counsel advises against accepting such a clause.
But it did matter.
It set a strong precedent.