Expectations and disappointment.
Nicely put and very much along the lines of where the question arises from, ie the modern expectation that folks should automatically get a good, rather than rough, lie in the rough, which these days seems to be considered (expected) by many to be a manicured area equvalent to the fairway but with longer grass.
The use of the very term, rough, surely came about because rough ground and foliage conditions are exactly what you’d once-upon-a-time have encounted if you strayed from the fairway, where ground conditions were generally somewhat fairer thanks initially to the more easily traversed terrain and the grazing of sheep etc all as then gradually improved, smoothed out, made a bit fairer, by man.
Atb