Good to see countries realize that if they just export raw materials and don't do any industrial processing locally, then they are mere colonies of a foreign power.
Even if the bigger part of the profits travels abroad, if the industrial knowledge stays in the country and also has a network effect on other industries and businesses, then it's a win on it's own.
Specially in this case where I doubt Chile even has the know-how and funds to explore the lithium on their own without foreign help.