Israel is crippling the Palestinian economy
Firstly, whether the West Bank land that consists of Areas B & C (under Israeli military administration) is empty or not is completely irrelevant — the reason this land is empty is that it is off-limits to Palestinian land owners and farmers, by Israeli military edict (context is important).
Secondly, the interim agreements in both Oslo I and II did not replace UN security resolutions, which set out the framework for a gradual withdrawal on Israel’s part from occupied territories.