Automattic can do whatever it wants, WordPress can not. Maintaining a truely free license should be non-negotiable for WordPress.

Further WordPress can not rely on Automattic's legal counsel regarding this matter. Automattic's counsel, like Facebooks, represents their corporate interests, not those of WordPress. More and more those corporate interests are overtly counter to WordPress' interests.

Vue.js seems a perfectly suitable alternative. What has been learned from Gutenberg so far could be used to start over with a clearer UX vision. Iterating into something really amazing.