My understanding is that we have a lot of such "compostable" materials. However, they don't have as good properties as "plastic" and so they aren't visibly repl

My understanding is that we have a lot of such "compostable" materials. However, they don't have as good properties as "plastic" and so they aren't visibly replacing them. Once we manage to get similar in structure and costs then it's a good start to replace.