Unfortunetely the same suckers that ripped all the models on Sketchafb (including over 100 of mine :-/) are of course trying to rip FAB.
I hope FAB is aware of it, and I hope FAB makes it better than Sketchfab!
The Data theft on Sketchfab was simply to massive to ignore or just accept it.
The weak point was the 3d viewer.
I hope FAB is preparing adequate COUNTERMEASURES.
Here is just one of many announcements, even on Patreon 
so ripping and stealing is now officially a Patreon worth project.
https://www.patreon.com/posts/fab-ripper-is-in-115037564?l=it