A couple of misconceptions about Western Sahara I've seen pop up over the past few days:
- most (90%) of Morocco's phosphate mining is done in non-disputed territories (it's mentioned in the article). The most disputed resource is actually fish, and to some degree predicted oil reserves.
- Tribal allegiances to the Moroccan crown date back from way before colonial times. Today, part of the Sahrawi population supports Morocco and another part supports independence.
- There are efforts on both sides to bolster their numbers: Moroccans emigrate to the disputed territories, and Polisario brings in migrants to its refugee camps. That's partly why organising a referendum is almost impossible: no-one agrees on who's allowed to vote.
- Morocco and Algeria (/ the Ottomans before Algeria) have been fighting over access to southwards trade for centuries. Geopolitically, the endgame for Algeria is to encircle Morocco.
- Polisario itself is quite antidemocratic. Only two leaders in 50 years of existence, and lots of corruption.
- Morocco's plan is actually of "advanced autonomy", which would let Sahrawis get their own parliament, amongst other things.
- Today, Sahrawis on the Moroccan controlled areas basically enjoy a welfare state with free transport, no VAT, and many other benefits.
All in all, it's far from the colonial story we'd reflexively apply onto this situation. I'm biased as I am Moroccan. In my opinion, Morocco is already a deeply multi cultural country, and we need a stable political environment to unite.
This conflict keeps the North Africa region one of the least economically integrated areas in the world. It prevents us from building sustainable people power against oligarchic and authoritarian powers, who are at least just as bad on the Algeria/Polisario side as they are on the Moroccan side (Algeria and Polisario are military dictatorship, Morocco is a constitutional monarchy, pick your poison).