https://en.wikipedia.org/wiki/GOG.com (the article incorrectly calls it Cypriot company, it's Polish).

And I meant major ones. They admit that DRM isn't needed. See the report in the link above. Their usage of DRM isn't caused by business enabling requirements, but has completely crooked unrelated reasons.

So basically every mainstream movie and television content producer is colluding with every other such producer for some crooked end? By revenue, the overwhelming majority of the media industry is a criminal conspiracy?

Basically, every major film studio (or rather film publisher) is insisting on DRM when making distribution deals, for completely crooked reasons, yes.

gog.com is actually pretty good for getting somewhat older computer games. Like steam, but with even less hassle, and fewer hassles like the steam client deciding it doesn't like your network connection.

They have recent ones too, as long as developers are willing to release DRM-free. I recently bought Torment: Tides of Numenera there.

What's the biggest title any developer has released direct (or "recent") to Gog without DRM?

Biggest in the sense of sales, size of the game or development budget? GOG don't really publish their sales numbers, and budgets are often relatively private too, unless it's a crowdfunded project. But I'd guess it's probably The Witcher 3 which is quite a big game in many senses.

From the recently released, Shadow Warrior 2 is also pretty big. I wouldn't call the above mentioned TToN a small game either.

Witcher 3, big AAA title about the adventures of a magical swordfighter who also gets laid. The twist is, the developer also happens to own GoG.