Round oranges(i.e.juice fruit) are self pollinating,but do produce higher pound solids ,or juice produced when pollinated,but not enough to be able to get growers to pay for.That's why they want or allow bees in .
As for veggie contracts ,I don't think it's that easy to find ,unless your one of the low ballers that under charges the rest of us.
If your charging 50 to 60 dollars or more you'll have a hard time replacing the 40 dollar guy,which there still is out here,which by it's self doesn't say much for the business sense of some beekeepers here and abroad.
Where there are fruits and nuts there are beekeepers!!!