How is Cdpr making money?

EDIT: 1. ive seen alot of people say the new dlc isn't free, I was wrong. I probably misheard it at gamescom. 2. The reason I asked this is because cdpr has been making witcher 4, the new dlc, the remaster of witcher 3 and both dlcs and the anime over the past couple of years so I was wondering how are they so rich to keep pumping out stuff like this? Especially for free? I senn the reddit replies or whatever u call them, and it's because cp77 and witcher 3 are still selling millions per year.

This might sound stupid but with the announcement of the remaster they said that anyone who owned the the witcher 3 gets to upgrade to the remaster for free, along with anyone who didn't own the 2 previous dlcs gets them for free also, nit only that there's also a 3rd new free dlc. Genuinely how are they profiting from this???