There was a period when Finland only had one spot, 2001 - 2005, despite having 3 skaters with almost identical talent.
They had Elina Kettunen 11th @ worlds in 01, 11th at the Olympics 2002 and 5th at Europeans
They had Susanna Poykio sent to worlds in 02 instead of Kettunen where she finished 12th, was 3rd at Junior Worlds and 6th at europeans
Alisa Drei was sent to worlds in 2003 as she finished highest at Eurpeans but again, finished 12th
Poykio went in 04....but....finished 12th
The point is, Finland had 3 girls at the same time capable of finishing top 10 at worlds, but only had 1 spot for 3 years because they kept falling slightly short.
Poykio finished 8th in 05 and opened the door, just in time for Korpii and 2 spots in Torino.
The point is, USA are very similar at present. They have half a dozen girls who like Finland in the early 00's, could potentially crack the top ten...but really, 3 spots are only reserved for countries where there are top ten chances AND medals. I don't see Wagner, their champion, cracking Kostner/Asada or Kim!?! And whats the point of sending an additional athlete who might come 12th!?
As soon as USA find a Lady who is better than one of Kostner/Asada/Kim or even Suzuki/Sotnikova/Tuktamasheva - THEN they'll get 3 spots!