And I’m sure Israel is very happy to keep it that way.
It also seems like the people in charge of the split groups are happy to keep it that way. I’m sure there’s a substantial amount of foreign influence, but it looks like neither PNA or PLO have had elections since 2006. PNA under Hamas clearly has some religious/military motivations that they play out with authoritarian style, but it seems that the current leadership of the PLO has inherited Arafat’s financial empire:
According to a 1993 report by the British National Criminal Intelligence Service, the PLO was “the richest of all terrorist organizations”, with $8–$10 billion in assets and an annual income of $1.5–$2 billion from “donations, extortion, payoffs, illegal arms dealing, drug trafficking, money laundering, fraud, etc.” Estimates of the Palestine Liberation Organization’s alleged hidden assets vary wildly and only Arafat had the whole picture. A former PLO finance minister said it was $3 billion to $5 billion.
So why would they be interested in sharing/dividing control of that? Israel is probably fanning the flames of the internal divisions, but I bet the self-interest of the leaders of the various groups carries more weight.