but imagine it this way. instead of 100 addresses sending out and respending every 10 minutes. they have to wait an hour.
imagine if they tried to respend right at that 6th block. the next maturity is 2 hours..
where as everyone else that only spends once or twice a day, or week or month never gets maturity locked out, because it matures before they need to respend. but know they can respend because the waiting time is AFTER confirm.. thus they know they have been paid. instead of the current setup that delays due to spam leave them waiting before confirm and unsure if they will be even paid..
thus ethical people can spend when they want and malicious people are ending up having to wait.. and its all done by code rules.. not 'fees'
the problem is that they are not using "100" not even "1000" addresses. it goes so much deeper than that.
here is the last time this happened:
https://bitcointalk.org/index.php?action=profile;u=553487;sa=showPoststhis is the tip of the iceberg and there are about 820 keys there used in the spam attack, each address containing lots of transactions (about 10K to 40K outputs) to spend.
and this is only the private keys they released to fool others into making transactions with the inputs and join in the attack. they also had other addresses which were sending out transactions on a massive scale.