Why don't more recordings have soundstage outside of speakers

With all the supposed audiophile brain trust on this site, where are all those experts chiming in?

I will give you a hint. What do you think happens when the sound from the right speaker gets to your left ear? How about what happens when the sound from the left speaker gets to your right ear? I will give ya another hint. The time for the sound to get from one side of your head to the other is probably related to the angular width of your speakers.
Some recordings some delayed left channel added the right or vice versa and that can make the width seem wider, but you better be in the sweet spot.
There can be additional information in the volume, but as one of the more astute audiophiles noted, you better have your system tuned to get the most of it. I see the posts on here. Most of y'all aren't even playing baseball let alone in the ballpark.

Ya all worrying about cables and fuses when ya can't even get the basics right. You need some tough audio love.

pragmasi, I prefer a pan hard and delay. That simple pan and invert gives a moving image based on signal content. Delay gives ya better control. Gotta be in the right spot for it to work well. With headphones no need for such crude instruments. No mystery or magic if ya know what is going on and no need to make things up.

Ya got a choice. Ya can have good and accurate imaging, or you can have an artificial and wide sound stage inaccurate imaging. Without those tricks Mijostyn and pragmasi talked about, ya don't get things placed well outside the speakers. Ya don't get that in live music either unless you are sitting first row at the orchestra. Bad place for good sound.

Ya can't solve some problems without sophisticated tools. Your tricks don't solve the problem of why sounds don't naturally extend past the speakers. Nothing to do with late or early reflections. Nothing to do with Helmholz radiators. A link to a paper that is a hypothesis not gonna change the issue. Reflections don't give ya the accurate placement of sounds. It only gives you a false set of sound locations. Ya it may sound wider, but it is not what is in the music.

Ya all got to up your reading abilities. It says HYPOTHESIS in the first paragraph. Don't take no genius to know it is a hypothesis when they say it is a hypothesis. Ya not getting the basics here of how this all works and ya seem confused by more than that.

pragmasi,
I gave ya the answer above. Okay, I gave ya a hint.  What happens when the sound from the left speaker reaches the right ear? What happens when the sound from the right speaker reaches the left ear?  The sound from the other speaker not gonna magically disappear. The studio tricks aren't exaggerating stuff, they are just crude noise cancellation, cept the noise is the other speaker. Those tricks let each ear hear only one speaker sort a, just like headphones. Reflections got nothing to do with it cept creating false images. Sounds real good too. Most people like it. Makes it feel like you are there. But get carried away and what's in front of you, the important stuff, starts to sound like crap.

Unless your coherent working or whatever ya want to call it can get a reflection from the right speaker to the left ear one head length later than the sound from the left speaker and invert it as well, then it ain't going to do what you think it does. I can't make it any simpler for ya.

Enjoy your coherent working, but ya not contributing to what the topic is about. Ya missing the point.

Ya not contributing to this thread Mr. Mahgister. Why don't more recordings have soundstage outside of speakers. Ya not answering that. Ya off on a tangent.