>>8753238The UUG(p) stuff makes sense since the deal is that TJPW gets to use their name so they want a cut of the merch sales. There is also the fact that CyberAgent can see sales metrics from PWT and 3rd party resellers like White Rabbit and simply decided that it wasn't worth the effort to build and maintain an international store. Just because WU had an upswing in subs from international fans doesn't mean that translates to international merch sales.
Furthermore there are probably big differences in the way the contracts are structured regarding merch cuts for the talent between the different promotions. Maki Itoh sells her merch on PWT independently from TJPW which may have been the result of her contract allowing for one merch internationally while controlling local merch sales and taking a cut. Marufuji, for example has had a long standing Yahoo shop where he sells his curry independently from Noah/Cyberfight despite also including trading cards depicting himself performing moves on other wrestlers from Noah.
tl;dr is that there are probably a number of factors preventing it from happening and we really wouldn't be able to know unless workers from the three promotions started leaking their contract details.
So if you want merch you are going to have to go through a reseller. If you have been a fan of puro for any period of time this shouldn't be that big of a deal as even NJPW fans had to do that before the Tokon global shop opened, and still have to do it in order to purchase exclusive items from the Japan shop.
p.s. Marufuji's curry is pretty good, it ships internationally, and it is definitely spicier than most Japanese style curries.