Nowhere in nature (that we know of) does any organism make a membrane from scratch. All membranes are extended from an existing membrane, and then pinched off.

Nowhere in nature (that we know of) does any organism make a membrane from scratch. All membranes are extended from an existing membrane, and then pinched off. Possibly, all life and all its existing membranes were extended from a primordial membrane. Arguably, DNA, RNA, and the proteinome are just the universal membrane's way of making more membrane more efficiently.