In an industry where value is based on research put in...
...there has to be some level of price fixing, to set a bar for friendly competition - it may seem bad, but I cant think of a single industry that wouldnt do this, where there products are based on very costly R&D.
Not to say that some big companies don't go to far, as seems to be the case here - but to say that this isnt the norm might seem a little naive to me.
There are other factors at play also, such as the market value for lithium, cost of getting it out of the ground, availability etc. You dont want to set prices too low that every man and his dog buys it, then suddenly realise global lithium stockpiles are dry. Maybe I missed the point here, IDK.