Is this a serious question?
It's never been ok for a person to do that.
You don't even have to make a request to hear a radio broadcast or see a tv broadcast, they are actively broadcast and bathe you whether you wanted it or not.
Now imagine setting up a service, even a free one where you don't make any commercial gain from it, where people ask you for stuff, and you give them bits of the stuff you've collected that was just literally falling from the sky. You give them the stuff not in the form of quotes for discussion, but presented as content itself, devoid of any prior context.
The user asks for some sci fi, and you give them 15 minutes of Star Wars which you got from a tv broadcast. But you don't tell the user "This is Star Wars, written by George Lucas" You just give them the content and the user thinks you created it.
Or worse, the user thinks THEY created it, merely using your tool, just a fancier version of using a spell checker, they are still the author since they directed the tool.
The user asks for a deep insight into human nature, you give them something that some famous author said, but not the authors name. The user then publishes a book containing this gem of deep insight, and other users think they are deeply insightful and buy their book.
This is not what happens when a person learns from life, including reading famous books, and then starts producing their own content.
The fact that it's possible to construct some scenarios where it seems like all the essential elements are the same does not actually make the two things equivalent.
Here's my own little insight into human nature I'll offer: It's pretty common for some people who pride themselves on being smart, for some mysterious reason to only be selectively smart. They will construct good valid logic that serves one purpose readily, and yet somehow fail to construct or even percieve equally valid logic that serves some other purpose.
If one is smart enough to try to present this logical argument that it's ok to steal other peiple's work, I submit that they are then also smart enough to be able to work out how and why that is in fact stealing.
We don't even have to get into the obvious, how MS themselves "broadcast" Windows to everyone by getting manufacturers to preinstall it on every machine. That wasn't even an http request. You just wanted to buy a piece of hardware, and it just came with Windows whether you wanted it or not. Even if you remove it, it was already given to you before you opened the box, and even after you wipe it, it's licence key is still there literally burned into the hardware. Therefor, since MS put it out there themselves, put it into your hands themselves, you are free to reproduce Windows. Oh, just pieces? Pieces are fair use? So, just a handy dll then. That must be ok.
There is no end to the ways this argument doesn't hold water.