Gaza has a border with Egypt as well. If Egypt were so inclined, they could open it and allow all sorts of trade and humanitarian relief. They could even set up a refugee camp to protect civilians from harm. They would rather not open the border because they don’t want Hamas to get a toe hold in Egypt.

Also as far as mineral rights go, the reason every partition plan has been shot down in the past is that the Palestinian side will not accept anything less than the entirety of Israel/Palestine and this has been the case going back to the first partition plan proposed by the league of nations in 1947. But as a result of not agreeing to any of the partition plans Palestine is not legally regarded as a country. And therefore doesn’t have mineral rights. Sucky but true.