This is quite exciting in that it removes plastic waste. I see no reason why different companies can’t make different shape ones to maintain their lock-in. I expect a knock-off market to pop-up, but that exists with plastic pods too. It’s a step in the right direction at least.
In Switzerland we got something similar, it’s little balls though. It comes packaged in cardboard and you can compost the remains https://www.coffeeb.com/en-ch