If they can't figure that out themselves, they are in the wrong business.

Just struck me that our consumer laws forbids that anything can lose resources like that without previous consent or proper compensation at consumer's decision. I bougth my PS3 in USA here so it does not apply to me but I wonder if one takes this to the proper authorities here, what would be the result? INAL but I think that Sony may be even prohibited to do this change here.

The problem is that we don't have clear laws regarding spamming. There has been some legal actions base on analogies with older things but it's not a clear shot. I rather take it to the technical level and block their traffic and/or see what can I do to add them into some RBL.

No, I'm not. I'm quite happy to pay more for quality. If you are willing to cope with this sort of crap, that's your choice but remember that the whole internet idea is about collaboration. If you put up too much crap, you will start to get blocked and your 19.95/month won't worth a dime.

Because if they do, we would have a lot less of malware and spam therefore more resources available. Isn't that obvious?

By your logic, I could accept money from drug dealers as well, "cuz, ya know, without customers that pay money, companies go out of business" . If they accepting money from spammers and malware dealers, they are liable as well. I could press civil and criminal charges or I can just block their traffic completely (which I've done, BTW). Then I turn from a "whining bitch" to a royal PITA. Thankfully, the Internet is still free around here.

I do agree they are more targeted but that is a price they have to pay for their size and there are ways to investigate without snooping around one's servers. Also, what about the hundreds of complains I sent? I've never got one single reply.

Please. If you are a big company you need to be prepared to deal with larger portions of the same: good tools, good (and bigger) staff, a specialized security/response team. It's like any other company, One can't expect to run a large company with the same resources used in a small one.

They should have entered RTBLs long ago. Maybe this should scare them enough so they start to pay attention to the complains they certainly get.

One of the largest ISPs in Brazil, Locaweb, is the main source of spam and malware I get and it's not only about numbers. They just ignore every single complain I've done.

No. That means a new egg on their faces :)