It has always been this way and EAs banning even the uniformed and first time offenders (I do not under any circumstances think ignorance on any level is an excuse and I do think that even though it was harsh those banned learned a lesson I hope non of them will forget if it was a case of ignorance in there bannings).
Nothing is going to change that.
THe problem with this particular sentiment is that people are even ignorant of what they are ignorant of! Until shard transfer's got shut off, there was no whisper of hammers and such being banned. UNLESS YOU USED A SITE DEEMED BY EA TO BE ILLEGAL (thus breaking the TOS!!!) YOU HAD NO WAY TO KNOW HOW MANY THERE WERE OUT THERE!
Further, EA has not said to us, there is duped gold out there, be wary if you chose to buy gold. And DO NOT give me the line that all gold sellers are dupers and cheaters. You can rake in MILS in a couple days just by cleaning up after champs and harrowers. Hell, in the last 3 days I have pulled 4 high end 120 scrolls at spawns - Swords, Bushido, Tactics and Eval Int. Not knowing if there is duped gold out there or not, should I just keep these scrolls that are useless to me?? GET REAL.
You DO NOT put someone in jail just for having counterfeit money ... even if it is a goodly sum, unless you are sure they are the counterfeiters or knew about it! You do not say to someone "You sold a car for $1000 and took cash, so now you are going to jail."
Remember folks, that E-mail that EA sent saying "multitudes of illegal items" was a FORM E-MAIL, they sent the SAME THING (misspellings and all!) to EVERY SINGLE PERSON they banned. NONE of us know, beyond runics, what was duped. WHY? Because, even tho they have fixed the dupe, EA WONT TELL US!
Given all that information, NO, I dont think they should IP ban these people. Not until/unless they PROVE that each person was actually responsible for duping.
Oh, and if you are interested, I know for a fact that the actual dupers knew TWO WEEKS before this banning that they were under investigation. One of them told me as much 3 weeks ago.