Oops, his ballpark was $50 million. I obviously have no idea how much things cost.<p>Still, I think many of the key ideas behind Kraken are out there and not patented. Zstd and lzfse already use ANS variants, for instance. But they&#x27;re targeting different speed&#x2F;compression tradeoffs, and aren&#x27;t implemented as well as Kraken.