At Zenimax: "Hey guys. This whole VR is becoming a real thing and we dismissed it along with this Carmack dude. Lets fill a suit against Zuckerberg for ludicrous amount of money, maybe we can get couple millions for free via settlement."
I should think so. I've tried nominatim/osm data but it took forever to query a large set of coordinates. I was only interested in knowing the nearest city and admin regions 1/2. And this library is really fast... ~20s to lookup 10M coordinates on my MBP. If you'd however like to know the full address, then this is maybe not a good idea.