I can well imagine a parallel universe where Israel gave them NO money whatsoever. You know what would have happened? Hamas would do the usual Islamic fundamentalist thing. Form a terrorist group and attack Israel. And then media commentators and intellectuals would accuse Israel of failing to help Hamas get put on the right path by helping them at the start, and instead Israel's inaction was like strangling a baby in the cradle. Typical Israel! Damned if they do, damned if they don't.
You imagine the future that suits your perspective and act like it's a fait accompli.
In reality, the PLO would have (and had been) quelling Hamas effectively. And then they were sitting at the negotiating table (after a rather ugly period). So Israel was facing awkward questions of "If Arafat is willing to negotiate, why aren't you?", so the Israeli far right locked in on the idea of "surreptitiously fund Hamas against the PLA/PLO".
Your imaginings count for nothing, because they're just your preconceived notion.
