There's already an Internet 2. It's a super-high-speed network used to link laboratories, research groups, and some universities.
Yes, the students at the universities have downloaded mp3s. Yes, the RIAA sued them. Some things never change.
The cause of Internet malware is 50% Windows' insecurity, 50% dumb users taking advantage of that insecurity. Pure and simple.
Yes, the Internet is not the problem. It's the operating system at the end user that's the problem. Major blunders from Redmond...
Almost all the zombie-computers (viral/trojan laden computers that are used by spammers worldwide to proliferate their crud) that display an IPA who are used by spammers are either: public proxies or connected to an educational network of various types.
Most educational networks have lax security -- surprising, but true -- compared with private enterprise (still also guilty but not as pervasively...hotels and public trading pc terminals are also among the worst zombie-affecting).
Many of the educational nets in places like Taiwan and China and Southeast Asia, Britain, etc., are all identifiable as having spammer-zombies.
So, actually, anticipating public-use pcs (that includes educational nets) to be more secure is foolish, given the higher degree of personal unaccountability that affects many terminals.