Eventually I think AI safety will be solved through some mixture of design choices, supervision/monitoring, and human-administered "incentives" for good behavior (not unlike the reward signals in reinforcement learning).

But to flesh that out in detail requires a specific AGI design, something we're far from achieving. The current inability to get specific is probably why AI risk doesn't get more attention (though it does get a lot).

I've written about this topic more here: http://www.basicai.org/blog/ai-risk-2017-08-08.html