I just want to point out that populations used to vary and migrate in many undeveloped countries up until the early part of the 20th century. The definition of borders has largely been a western construct and clear defined national lines for populations to rgisternto also emerged from the same construct.
Was Palestine less populated? I'm sure it was. The fact that national lines were erected clearly set divides as to where populations were allowed to reside. It's hard to dispute that there wasn't a population in the area before Israel was created by the west following World War Two. Outside of religious identity the world Jewish community not previously living on that land held little claim to the land and the Jewish population held the same claim as any other population living there.
Of course wide scale development attracted more people, so did it attract more Jewish settlers. But that's basic economics. It's the supremacy over the land since then by the Israeli state that is questionable.
As far as it is all concerned and going forward I do not believe one side should have rights over the other. I believe it was a total mismanagement of national creation. There are parallels that could be drawn to the conflicts in Northern Ireland. I believe the only way to resolve this is to one day have the Jewish and Muslim (and Christian) populations form a coalition government to govern over the area that takes the interests of all parties into its governance. Unfortunetely we are still a long way away from that.