As much as I love React, I have decided to focus more on Vue, going forward - and I am sure you were all really wanting to know my opinion on this ;-)
The licensing issues raised since Facebook added the BSD + Patents clause are NOT the direct reason why I feel this; from my perspective the React licensing is actually quite appropriate.
The technical aspects of both are similar, but have sufficient differences that mean a decision to use either can only be made on a per-project basis.
However - the impact of the React license on Open Source projects has, I feel, tipped the 'community balance' in Vue's favour in the coming year.
The Laravel (php framework) having adopted Vue so heavily, and now the recent announcement that Wordpress (php based CMS) is to move away from React to adopt Vue, is a significant shift in terms of potential community investment in Vue.
As Wordpress has around 50-60% market share of all CMS based websites, I feel it wise for developers and architects to gain an understanding of both React and now, more than ever, Vue.