If you use duckduckgo, you already use Bing results.

I rarely use google, and when I do it's from duckduckgo !g

I would immediately switch to bing by default if such bangs were supported as I sometimes need them for wikipedia !w or amazon !a

If there was a way they could be supported Edge address through a plugin or something, I would immediately switch to bing as that's what I already use 90% of the time (between duckduckgo frontend and requesting bing directly with !b )