I agree that it's too crazy for Mozilla to seriously consider it. But, assuming Tor did receive widespread adoption of exit nodes at this scale, the internet w

I agree that it's too crazy for Mozilla to seriously consider it. But, assuming Tor did receive widespread adoption of exit nodes at this scale, the internet would have to adapt to accommodate this many people rerouting other people's traffic. ISPs would encounter the same backlash for throttling or blocking users who run exit nodes as they currently face when doing it to users running Netflix. Unfortunately, it takes mass adoption to force this kind of adaptation, and it's generally an easier fight to maintain venues of freedom than to open new ones. So we have a chicken and egg problem essentially; Mass adoption is necessary to force regulatory and infrastructural accommodation, and that accommodation is necessary to foster mass adoption.