I think differential technological development - prioritising some areas over others - is the current approach. It achirves the same result but has a higher chance of working.
Thanks for your response and not to be argumentative, but honest question: doesn't that mean that you want some forms of AI research to slow down, at least on a relative scale?
I personally don't see any thing wrong with this stance, but it seems to me like you're trying to suggest that this trade-off doesn't exist, and that's not at all what I took from reading Bostrom's Superintelligence.
Following some somewhat misleading articles quoting me, I thought I’d present the top 9 myths about the AI risk thesis: