it's not very difficult to understand, when first class is 10k and business is 3,5k 9/10 you'll "settle" with business class.

plus, the evolutions and improvements in business class seating in the last 10-15 years have closed the gap significantly between F & J. these days there isn't much of a difference in terms of the actual seat or comfort offered. is the caviar and Krug really worth the extra thousands?