Also, you people that think this game was anything without the books and content are completely delusional. I don't think he deserves 16m, but hey I'd throw him a bone at least.
The books weren't even translated to English before the games came out. They were a cult hit in Europe before the games, but the games turned them into a worldwide cult hit.
The first Witcher game had only sold ~1 million copies a year or so after its release. A popular game, but not a world-changing one.
It was the hard work put in by CDPR on The Witcher 2 and especially The Witcher 3 that turned the series into a global hit and got it the Netflix series, English adaptations of all the books, etc.
Sapkowski is being greedy, pure and simple.