The artificiality of a Palestinian identity is reflected in the attitudes and actions of neighboring Arab nations who never established a Palestinian state themselves.
The rhetoric by Arab leaders on behalf of the Palestinians rings hollow. Arabs in neighboring states, who control 99.9 percent of the Middle East land, have never recognized a Palestinian entity. They have always considered Palestine and its inhabitant's part of the great "Arab nation," historically and politically as an integral part of Greater Syria - Suriyya al-Kubra - a designation that extended to both sides of the Jordan River.
In the 1950s, Jordan simply annexed the West Bank since the population there was viewed as the brethren of the Jordanians. Jordan's official narrative of "Jordanian state-building" attests to this fact:
"Jordanian identity underlies the significant and fundamental common denominator that makes it inclusive of Palestinian identity, particularly in view of the shared historic social and political development of the people on both sides of the Jordan. ... The Jordan government, in view of the historical and political relationship with the West Bank ... granted all Palestinian refugees on its territory full citizenship rights while protecting and upholding their political rights as Palestinians (Right of Return or compensation)."
The Arabs never established a Palestinian state when the UN in 1947 recommended to partition Palestine, and to establish "an Arab and a Jewish state" (not a Palestinian state, it should be noted). Nor did the Arabs recognize or establish a Palestinian state during the two decades prior to the Six-Day War when the West Bank was under Jordanian control and the Gaza Strip was under Egyptian control; nor did the Palestinian Arabs clamor for autonomy or independence during those years under Jordanian and Egyptian rule.
And as for Jerusalem: Only twice in the city's history has it served as a national capital. First as the capital of the two Jewish Commonwealths during the First and Second Temple periods, as described in the Bible, reinforced by archaeological evidence and numerous ancient documents. And again, in modern times as the capital of the State of Israel. It has never served as an Arab capital for the simple reason that there has never been a Palestinian Arab state.