Are there 10 inch dado sets?

Most dado sets sold at Amazon are 8" or 7" sets – are there any for 10"? Why are larger than 8" dado sets not common?

Alternatively, could you use an 8" dado set in a 10" table saw, if only the arbor hole is suitable? Or, could you use any smaller diameter saw blade in a 10" saw, provided that the arbor fits in?