I've seen it mentioned somewhere else, but while they don't mention it in the arricle. There's a chance we are possibly looking at age restriction at the isp level. This could be a way, but there will be work arounds for those tech savy enough to get around them I could forsee.

We could start our own underground p2p or LAN connection completely detached from regular isp but the logistics to that would be extremely difficult to pull off on a massive scale and more than likely would be more locally based amongst friends and neighbors. Vpns could get blocked at the isp as well, so that wouldn't be an option either to bypass it. I welcome any corrections though if I'm mistaken. Hopefully it doesn't get thay far, but a lot of these similar laws are occurring all over the world and not just in the USA.

There's usenet, freenet, hypnanet, and tor. However, the protocols could get blocked and or restricted, so not sure if there's a way around that.