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.
I have a de longhi. It grinds the beans into a coffee maker handle and then it makes espresso. There is another brand that also has something similar. It works great.