I’m not entirely sure what this means, could you provide an example? As a decentralized service and protocol, there really is not a provable solution to hinder speculative domainers. There isn’t much ENS will implement to combat this as it would start to detract from ownership infringement.
I would recommend to replace ‘sale(s)’ with ‘registration(s)’ as the cost to acquire the right to ownership and possession of an ENS name is simply a fee that is forwarded to funding ENS development and supporting the DAO, it’s contributors as well as greater native Ethereum ecosystem initiatives.
I want to re-iterate that decentralized identity is a choice. Yes, there should be an awareness to what it offers. Quite frankly, I don’t think there is a better marketing convention that markets ENS names than putting .eth in your twitter. As far as I am aware, that was completely organic and has never been a requirement of anything or has any persons persistently directed others to do so in any official capacity.