Seems Clear to Me, page-2

LCT pegmatites   ( lithium-cesium-tantalum ) are found all over the world ........... the claim of CS being one of the rarest minerals on the planet is a nonsense ....

table 1 has literally hundreds
https://pubs.usgs.gov/sir/2010/5070/o/sir20105070o.pdf

The fact that there are only a couple of stand alone mining project for CS is indicative of the minuscule market for CS, not its rare occurrence and more to the point  ... as supply of  lithium grows to meet its expanding market so too does the supply of CS grow as a byproduct of that Li production ... BUT!!! its market is not and will not grow anywhere near the same rate as Li .....
Ergo - enough CS produced at minimal or (no cost) to the Li producers for their by-product


CS credits have value in offsetting Li production but thats about the sum of it .....

and those arguing Cabot profits are down because they don't have the CS supply and can not service the CsFB market properly anymore can then explain WHO! has taken up the slake of their (Cabots) unserviced market share ?? ..... obviously it isn't another 'CS' miner so

Either ..........

Someone is using their LCT deposits affectively and servicing that market via their by-product which aint good for PIO's CS dream
.......... or ...........
The CsFB super duper market is a myth and their is no 'ex Cabot' CsFB customers champing at the bit for supply  ............ again .... aint good

Cabots profits from specialty fluids are testament to the precarious nature this CsFB panacea