I like the bubble tea places, they use a sheet of plastic that is thermally set onto the cup instead of a discreet lid. seems like less waste and the lid and cup end up being one piece.
Sure, won’t work for hot coffee, but I like the idea that there are different ways to deal with the basic problem of serving up drinks.
Maybe hot coffee should go into a Tetra Pak at the shop. But then you have a bunch of Tetra Paks, which are notorious for being poorly recycled.