its not what they want matters , its what YHWH promised to Abraham..
Genesis 15:18-21,

"On that day the Lord made a covenant with Abram and said, ‘To your descendants I give this land, from the river of Egypt to the great river, the Euphrates — the land of the Kenites, Kenizzites, Kadmonites, Hittites, Perizzites, Rephaites, Amorites, Canaanites, Girgashites and Jebusites.’”

pretty big real estate ..