How come Horn + woofer designs are not more popular?


A couple guys on my audio discord really love the JBL synthesis 4367 and feel that all traditional 3 way tower speakers suck because they have poor bass response and are generally shy sounding. What I wonder is how come the majority of speaker makes do floor standers that are 3 way as oppose to the Horn +woofer design of JBL?

Is there any downsides to the horn + woofer design? Can a horn convey microdetail as well as a Be tweeter like say from magic A or S line? They claim 3 way floor standers are just trendy. But is there anything more to it then that?
smodtactical
I just bought a pair of jbl 4429’s to check out after seeing several reviews online.  Curiosity got the best of me.  I did not imagine they could disappear like my Devore’s but they do.  They have zero horn effect.  And they are super musical.  Not selling the nines (at least not yet) but I enjoy playing and these are really superb and a great value at 5k.  Just let them break in, they definitely do!
Thanks to the beauty of a software package that design both speaker box and cross over, I was able to build my own high efficient speaker using Italian speaker drivers with horns, mid range and woofers in a 3 way systems.  I can hear the voice of Maria Callas live in concert in clarity due to Horns and Midrange.  Horn perfectly run in Tube Amps in 16 ohms impedance.  my amps is an Atma-Sphere M60.
I'm a long time owner of 15" Tannoys and when A/B'd against my other speakers with dome tweeters or Electrostatic panels, I will admit that they are the least delicate and agile in the high frequencies.  HOWEVER.... when I leave them set up and don't compare, I find that I simply love listening to music more.  I feel the music more, and I'm more connected to it.  Horn's tend to suffer in direct A/B comparisons.  I think people don't know how to listen for dynamics, and they don't understand how much that makes you fall in love with music.  When comparing 2 speakers, sparkley highs and deeper lows will usually be favored, but in the end, might be less rewarding.  
If I may add, that Paul Klipsch’s Klipschorn was all about making a woofer that COULD keep up with that large mid horn! (thats an 8’ bass horn wrapped up in a very small space!!) I own a pair, and I don’t believe there is another passive 3 way speaker system that can make bass output like the Klipschorn when setup correctly. Most have never heard a Klipschorn system in a dedicated and tuned room with PLENTY of breathing space which is unfortunate. (yes, you have to have ROOM for this size speaker).

A speaker with incredible efficiency, VERY low distortion and extreme dynamic range.

A speaker standing the test of time and still being made today some 73 years and running...

I invite anyone to come to my listening place and hear for yourselves. Send me a note and I’ll make arrangements. Bring your favorite music on most any format, sit and enjoy (O: