I seem to remember an OPTA.nl proposal from 2011 or so which was remarkably cogent. I can’t find it right now.
As my (partial) email archives from that period contain threads about ignored abuse reports and netblocks with entirely bogus contact information (eg the address is an empty lot
and the company in question is a shell), I would say that there’s a lot of déjà vu here and much the same arguments presented against any such proposal.
RIPE may or may not get to sanction people, but they do get to do due diligence on how and to whom they allocate netblocks. They have a fiduciary role towards IP addresses of the
sort that a bank manager has on verifying who they hand out a loan to, before handing over a single Euro.
--srs