Here is my experience from the “back seat,” but I am “in the car” with a braider based in Aiken, SC.
(I prep manes for her and any other braiders who are here at shows, plus any local who wants it in my Manes For Meows, one-person charity that donates all proceeds to a local cat sanctuary. I also used to groom and show as a poor college kid in yestercentury, so I got to see how braiding accounts worked then and a little bit now).
Now that H/J world has “industrialized,” everyone is a paid expert (no ammies braiding their one or kids doing their own day care), and trainers travel a lot, they hire braiders who take care of them. In the Facebook age, that means the braider is responsible for finding another braider for that trainer at any show she goes to. So if you get an account/become the braider for a pro here in Aiken who decides to take some horses to a show in Chicago, you had better get on the horn and find braiders up there to service those horses. That might be why it’s hard to hang out your shingle wherever you are and gather new business; pros aren’t looking.
I did have a horse braided at a show by someone (who has been exposed as sleazy in the horse-selling world and is also now persona non grata on one of the braiding FB pages) who did try to be something like a National Braiding Madam-- arranging to fly in braiders to help her at this little West Coast show. But! I’m not sure there that many braiders running huge, national brothels and monopolizing business everywhere. Rather, I think the main barrier to entry is that no one but an established braider is looking for more braiders.
But they are looking. I believe here really is a national shortage of braiders and the ones I work with would welcome a new set of skilled hands at the shows. I can ask how they come to hire new people and how those braiders eventually come to take on their own accounts. But know that there is more work out there than braiders can cope with. Also, there are a couple of braider FB pages (it sounds like you know this). If you put examples of your work and area up there, I’m sure someone will use you.
As far as how people feel about their horses braided by an unknown person? I don’t think the owners have a clue. I don’t think the trainers know or care too much so long as the horse looks good and is ready on time. Judging from how I get paid, it all really depends on how the main braider for the account sets it up. As often as not, the pro pays her braider and that braider pays whomever she hired. I’ll ask how this works. I don’t think my braider here is taking a cut of the work others do “for” her; but I do think they trade horse-to-be-braided back and forth depending on which show each one will be at.
PM me if you want, but I’ll also ask my braiders how this works.
ETA:
Oh, and I suspect that the drama queen mentioned obliquely above and whom I described as kicked off the main braider FB page is just one person who has posted here and got knickers twisted about the difference (or not) between a KWPN and a DHH (which is also a KWPN) horse.
Also, I think I recall my braider here staying that Gulfport is chronically underserved. So if you want to dig in and travel, let it be know that you will go to there.