D-Link, Linksys (Cisco), and Netgear have all been very good at updating their firmware as new vulnerabilities are made known. I think every OEM is aware of the free/not-free internet debate, but they don't want to build security as default out-of-the box. While I'd hate to be tech support at any company that did, having a bright orange "WARNING" pamphlet telling users that they're subject to anonymous freeloaders should be a requirement.

In the US, we have "Surgeon General's Warnings" on beer and cigarettes. If we have common sense warnings ("warning: this may kill you") on goods, we might as well have a federally-mandated ("warning: your neighbor might get free internet access") common sense labels on your WiFi AP from Best Buy.

If it's on the public airwaves like cellphones, radio, and WiFi, the best way to regulate it is to add security. If the security's broken, then you can prosecute for theft/misuse (no different than DMCA and DVDs).