There is no conspiracy theory at all. The last legally constituted government in Palestine was the Unity Government of March 2007.
It is just a matter of history.
The inability of islamics to cobble together a functioning society is not the responsibility of anyone but islamics.
The islamic terrorist franchises ruling in Gaza and the West Bank mirror the many failed societies across the Islamic Middle East. lslamics would hope to portray all the world’s ills as the fault of the Great Satan and/or Israel, or any other convenient excuse as this would relieve islamists from accepting responsibility for the disasters they create. Yours is really a hopelessly naïve position. Islamism as a politico-religious ideology has always been at war either with internal tribal rivalries or with external enemies that resist the in overt acts of conquest and oppression waged by your Peaceful Inner Struggling Retrogrades.
The tribal rivalries and failures facing the Arab-Moslem retrogrades falsely labeled as 'Pal'istanians" is just the latest example of a brutal, hateful ideology that poisons the mind and spirit and has yet to make itself compatible with the relevant first world.