My old workplace (left 4 months ago) is on the verge of dropping IE11 altogether, and as of my leaving, already was only supporting it as a "won't be totally messed up". That's a medium-to-large sized web agency for our sector. IE11 and lower represent sub ~3% of all traffic according to caniuse, people are slowly dropping it.

Only field where I can see this being totally irrelevant is stuff like public sector/uptight corporate intranet with computer still on W7 without any other browser installed than IE9, or very high traffic/wide public stuff. Otherwise IE is starting to fall out of style faster and faster these days.