On the other hand think as the Internet being a vast ocean where the bad guys keep dumping garbage, you can't control or filter the currents that are constantly changing and you neither can inspect every water molecule, then what do you do to find and penalize the ones that drop or permit their systems to drop garbage on the ocean ?
Bad analogy. There's some plumes of oil in the Gulf of Mexico that are getting mapped out very well by only a few ships. You don't have to examine every molecule to find parts-per-million oil, or to figure out who's oil rig the oil came from.
May be, but that is a particular case where you can exactly finger point who made the mess and make him accountable and responsible to cleaning it. But it's another example that shows that companies make decisions based not on what is right or wrong to do but what is more or less profitable to do within a risk management context.
And you don't need to look at every packet to find abusive traffic either - in most cases, simply letting the rest of the net do the work for you and just reading your abuse@ mailbox and actually dealing with the reports is 95% of what's needed.
Agreed, but you still have no control about what happens on the other side of the ocean, and if you don't provide a liability waiver to the abuse@ guy they may have their hands tied by their legal department to do anything. I'll give you another bad analogy, for sure we need to keep an eye and deal with transport and distribution, but the only way to eradicate drugs (most unlikely because of the amount of $$$ it moves) is to go after production and particularly consume, meanwhile the only thing you can do is damage control and contention. If it is still so freaking easy for the crocks to have a profitable criminal biz on the net, they will find the workaround to keep making money while its easy. My point is, go hard after the crocks and fix the holes, things like why the heck access to the power grid control systems are accessible over the net from Hackertistan ? And if there is a real reason for it to be on the net put the necessary amount of money and technology to make it as secure as possible. Regards Jorge