As someone that does Java and .NET consulting, with an ocasional use of C++ on the projects, I would say outside the SV darlings (Google, FB, Microsoft, Apple, ...), sadly very few people do.

While I do try to keep up with the standard, the majority of the code I bump into, on those projects, is still the typical pre-C++98 style and most devs aren't that keen in moving forward.

Specially in projects that are mostly driven by changing consulting company every few budget rounds.