That is true, but I think the circus probably did poorly because of modern concerns about animal cruelty associated with the circus. Perhaps a completely non-animal circus would have done better. That wouldn't be an issue with the fair, the only animals there would be the ones in livestock competitions, which it would be cool to have with prize ribbons on them from the new pony ranch sets. Speaking of the fair, I'm looking forward to the one coming to my area at the end of this month!
I think I'll go and look around with an eye for playmobil customs. 
That is so strange as most of the animals at the fair get eaten

our fair even had sheep racing where kids aged 4-6 would climb on and race on the track

then they get eaten as well. There are a lot of kids in 4H so it could also have that aspect to it, but again the livestock is sold to the highest bidder, bred and not only are the offspring eaten so are the parents.
I would love to see a Fair theme with all the rides and carnie booths. Then they could make actual carnie's to go with it
One thing I do not get is why playmobil never made a court room set. They have bad guys, police to round them up, jails to house them but then a piece of the puzzle is missing, the judgement day. A room with the judge, a jury box, defendant and plantiff table, court recorder and bailiff, that type of stuff. Give those klickies their day in court.