sanscript: There's only one rule of thumb concerning piracy: Steam is more popular and has more games, naturally the games there are being more often pirated. GOG's games can be put on a torrent just as fast or faster, as with DRM it can take little longer (depends if the DRM system used has already been cracked or not).
In fact, if you look closely you'll see that there are plenty of GOG's games on the marked, only that they're shadowed by Steam and Epic releases from known (and unknown) cracker/release groups, regardless if they have DRM or not.
"Loosing money"? In fact, they're loosing more by not releasing on several platforms, and devs should be flattered by people wanting to pirate and promote their games. The whole "sharing-is-caring"-culture is like that, and no-one wants to share or talk about things that are (outside of memes that is). Games that aren't known/popular or are considered crappy are not pirated, it's as easy as that.
No one wants to bother with using time, bandwidth (limits) and space to such things, other than making fun of it. That will never happen, and it doesn't happen anyway. Updates are released on pirate sites almost just as quickly, again, more likely if the game is known/popular. Doesn't matter if the game gets constant updates or not.
Besides, most games are abandoned after a short while...
EDIT: In fact it is the opposite - constant releases of patches when using mods are a pain, and gamers are more likely to either turn off updates altogether, or use a cracked/pirated version.
So much this. I usually download games to test them out and see if I like them, and if I do, I buy them. And while I preordered Cyberpunk 2077 and wasn't even specifically looking for it, the 1.12 update was on one of my frequented venues on the SAME DAY as the official release. GOG release, no GOG release, games will get pirated. People need to accept that and move on. If they want to protect a sales window, fine, but don't deny us for fear of pirates. I mean, most big companies probably avoid GOG for the "perception" that pirating GOG games is easier, and bad perception leads to loss of investors and stock prices falling. DRM-Free also means lack of control on the product. They can't cut it off or change things you don't want to change if you control your copy of the product.