Onto the Story though: I can not wait for (likely) Inari to come visit and ask for permission to set up a small shrine to themselves near (in?) Pawprint Shrine.
If we're to take real life Shinto customs, as the area around the Shrine flourishes and a sort of liveliness settles in, at some point the owners of the various vendors that have started to appear would want to have a shrine for the Inari.
Generally, the Inari are seen as those that bring wealth, be it agricultural wealth or monetary wealth. (It was originally the former, but belief changed as time passed as monetary wealth became much more tangible than agriculture, especially for city folk.)
A good sign of this in Real Life Japan is that even in (or perhaps
especially in) a city like Tokyo, if you look into one of the smaller streets there will be shrines dedicated to the Inari. It is also relatively common to see a small shrine dedicated to the Inari tucked inside larger temples and shrines as well.
Which version of the Inari gets worshiped varies; in the case I've seen in Ginza, it was a shrine dedicated to the Fushimi Inari of Kyoto, which answers to the deity Uka-no-Mitama.
I've also heard stories about the roofs of certain building having shrines for various reasons (not all dedicated to Inari, apparently) and mostly inaccessible for the public, though some are open to the public.
Now, the Kitsune/Inari of the recent chapter apparently wanted to do a direct takeover that was thwarted by Ammy (even if I think Ammy didn't do much beyond "what are you doing here girls?" and they just fled without properly answering), but it is possible that if they see how the Pawprint Shrine portion of the city is healing, they will just wait until they get invited in by the local populace.
Or, perhaps, they felt the invitations and came to scout out the area... only to meet Ammy and freak out.
Of course, as the Asian population in Brockton Bay isn't all Japanese, and that it is possible (though, given the Baachan squad, maybe not likely) that a good chunk of the customs are lost in the Japanese population, the Kitsune girls could have seen the healing and thought they could grab a large shrine that was 'unclaimed' yet.
Not to mention this being a Okami Fic, so things might not exactly apply concerning Kitsune and Inari, but still.