You make an interesting point, analogous to building an immune system slowly from small diseases, so one big disease can't kill you or an entire population. Similarly, small-time malware over the years has made us stronger against major internet attacks by governments or mafias. However, it's a risky path - from what I've read China's firewall has enough holes for business to get by with annoyances, but it is very effective at keeping most people from learning what they shouldn't.