The most important fact and I reply very often is the quality of...

The most important fact and I reply very often is the quality of the kaolin. You have primary and secondary deposits secondary deposits are washed away and therefore with lower quality.

https://www.engr.psu.edu/ce/courses/ce584/concrete/library/materials/Altmaterials/Kaolin.htm

FYI has the best economics of the three competitors and therefore the best chance to become the market leader. Take into account the margin with about 6500 cash costs and a conservative price of 24000 USD per ton. A financing for new entrants with poorer economic statements will get really hard therefore you will not get so much competition. For sure there will come more supply from kaolin than bauxit. We will see a rebalancing.

Hope I answered your questions well I am no native speaker. If there is any misunderstanding please ask again