Nobody buys dice because you can only buy them with DEC. 3000 DEC for a set = 24 USD. While the other sets were like 2 dollars per set.
It's interesting what you say though... maybe indeed, with new sets of cards that you can buy with fiat instead of DEC, the price of DEC will go down again yes... but as long as you can only rent cards paying with DEC, there will always be an interest in that for the new joiners that can't afford full sets of cards to play with.
i ignored the fact of only buying dice with dec :D
if they do everything they were talking about i do think the game will grow and some cards you will only be able to buy on the second market or rent so... :)
HODL!! :D