As i know there are many stainless keg manufacturer in china. Almost of them are the 30L 50L keg manufacturer.
But only one 2L stainless mini thread lid growler manufacturer.
Will the mini thread lid growler replace the big keg in the market?
No.
I agree. No.
The main benefit of kegging is putting one batch in one container. 2L containers are will continue to be a specialty product in my opinion.
Paul