Lakota:
It's more insidious than that. There is actually foreign aid to Egypt also, and this has created what amounts to an arms race that ends up costing Isreal more than if there were no US aid to both Egypt and Israel.
The aid to Israel has a lot of strings attached, like they have to buy certain US products. Net result is that, without aid to both Egypt and Israel, Israel would effectively get an increase in revenue because their key adversary will have less money to buy arms with, and therefore have less to compete with, and Israel would not be constrained in its purchases and spending, so they could buy things that are as good or better from other countries.
The position of the Israeli government, as I understand it, is that they don't want the aid either as long as Egypt doesn't get aid.