Although other event management websites seem to publish Entry Lists, I've always assumed it would just be more trouble than it's worth - seems to me, for every 20 people listed, you're going to get at least one emailing you and asking for his/her name to be removed for security/privacy reasons.
Non-members, obviously it would be preferable if they were included in the online entry routines - I don't think it's a question of them being 'restricted' out, it's just extra hassle to include them in. Where a club provides a service, it has to prioritise its paid-up members. (CTC apparently don't agree.)
If Ian's new forms work so well, let's hope eventually he can extend his services to cover the whole AUK calendar!
AUK makes nothing out of non-members DNS - but by the same token puts nothing in either.
Non-member validations however are the single biggest 'profit' item that AUK can get (ie the temp member fee).
I believe some Organisers have a kind of split system at their finish, handing cards straight back to anyone who does not want their ride validated by AUK. These Orgs are (maybe unwittingly) cheating AUK of a significant source of income.