Major, I think your point is really about language skills and not about geography.
Personally, I would prefer that companies who brand themselves as "American" or "British" or whatever were actually a little less lazy and jingoistic and spent more time reassuring me that the person writing my people was a native English speaker who had graduated with a quality (honors) bachelors degree from a high ranking university.
If I'm paying for an essay I really don't want someone with a GED, who scraped into the Boondocks Community College, and then some lowly college or state university to complete their degree, writing my essay. I don't care if they are based in the US and speak English as their first language! With that sort of background they would be hardly well placed to write me an essay that is up to the standards of the university that I attend (which is ranked in the top 10 globally).
When I am ordering an essay, I would like to be assured that the writer is a native English speaker (whether that is the UK, Ireland, USA, Canada, Australia, New Zealand, South Africa, etc, I really don't care), that they completed their high school education to a very good standard, and that they obtained their honors degree from a well regarded (not just accredited) university; I would also like reassurance that the degree they obtained was in a subject that matches the topic of the essay that I'm requesting.
If a French company could offer writers that met that specification then I would happily order from them. Just because a company is based in France doesn't mean that it is impossible that they have native English speakers working for them. I've never come across an essay company that requires their writers to come into work each day in their office; writers are almost always freelance and work from home - wherever that may be - and payments can be remitted electronically.
It's too easy to get into geography bashing - an American company is not automatically better than a Canadian company, and a British company is not automatically better than an American company etc. With the rise in home working fuelled by the internet, British writers can and do work for American essay companies and vice versa. The trick for students is to try and find an essay company that makes a reasonable attempt to engage appropriately qualified
and native English speaking writers so that the work that is ordered is completed to a high standard.