Source:

https://storage.courtlistener.com/recap/gov.uscourts.nysd.61...

p. 1

"This case is about, as Microsoft's Director of Applied Science put it, an astonishing theft of unprecedented proportions; SF1437, perhaps the largest theft of labor in human history. SF1652"

p.11

"As Microsoft recognized: millions of people around the world will soon consider large models hoovering up all their work to be an astonishing theft of unprecedented proportions and admitted that almost no one intended for content they created to be used in this fashion, nor are they compensated for its use. SF1437."

p. 74

"As Microsoft's Dr. Glen Weyl put it, compensating creators is in the best interests of my employer, of my country, and of many other groups I belong to. SF1657."

Hyperbolic quotes from Microsoft employees are, IMO, the least interesting elements of this brief

Here is Microsoft's brief. Note how MSFT responds to the "web grounding" claims

https://storage.courtlistener.com/recap/gov.uscourts.nysd.61...

It seems OpenAI does not want the public to know about (a) OpenAI's data collection and retention practices and (b) the number ChatGPT users have requested deletion of conversations

https://storage.courtlistener.com/recap/gov.uscourts.nysd.61...

"OpenAI seeks to redact specific information about [(a)] the number of users who requested deletion of ChatGPT conversations and [(b)] OpenAI's related data collection and retention practices."

"Disclosure would give OpenAI's competitors insight into OpenAI's confidential business practices and customers and cause competitive harm to OpenAI. Yeats-Rowe Decl. 4."

Perhaps it would causes competitive harm because, upon learning about OpenAI's privacy practices, ChatGPT users might reduce their usage of ChatGPT

Declaration is sealed so we can only guess