For many things (In the UK at least) there is still a non Internet infrastructure for interfacing with things like Government departments and banks.
But many other times there simply is not, I remember a few years ago (maybe around 2007) job hunting and asking for an application form and being told that all applications had to be made online.
Also for some of the systems I have developed we have ended up using email address as a uniquely identifying piece of information for each customer which basically means that it is a mandatory field whenever a record in the DB is created and I would guess many others have done so too.
But many other times there simply is not, I remember a few years ago (maybe around 2007) job hunting and asking for an application form and being told that all applications had to be made online.
Also for some of the systems I have developed we have ended up using email address as a uniquely identifying piece of information for each customer which basically means that it is a mandatory field whenever a record in the DB is created and I would guess many others have done so too.