Either the shop will be C++-14 for all time or they will do whatever it takes to use the latest and greatest compilers and language features. I don't see why b

Either the shop will be C++-14 for all time or they will do whatever it takes to use the latest and greatest compilers and language features. I don't see why breaking changes is such a major concern. Unless the aggrieved party is the compiler maintainers, I guess.