You're missing the part where the curve around your hip, and this spreads them out some.
But yes, they are the closest together of anything on the market. I've had zero issue with them, and while they might not be the first thing I grab for competition, there is nothing better out there for duty, where real estate really starts to matter. You can also run an ESSTAC three mag pouch, and leave the middle space empty. You then have the same dispersion as most others, with the ability to plus up if you need. Where the stuff really shines is when you use the second pouch for a light. So in the same profile you would normally have one pistol mag, you now have one and a light. I will try to throw a picture up of this set up later.
ESSTAC is light years ahead of most other mag pouches since they are fast, simple, adaptable to different mags, easy to service/tune, etc. The only feature I'd like to see him add is the ability to add a retention flap, basically just a strip of fabric, for those mags behind the first one.