I must say, there is one concern that keeps me away from using otherwise great Facebook technologies like Phabricator and React is that I don't believe Facebook will be here in 5 or 10 years.
What will happen to these projects if that is the case?
What will happen to these projects if that is the case?
The GitHub URL will probably change if Facebook vanishes, but the project would otherwise be unaffected.
Also the tools they produce are an order of magnitude better than their main product, which I can't wrap my head around either.