Today, on so many occasions, it's all about meeting regulations. If you're clipping a cable or installing a works lighting system, the standard of work isn't appreciated to the same extent, resulting in cheaper and inferior materials and labour, meeting the requirements according to regulation and H+S.
Sometimes, higher class work is required, which separates the wheat from the chaff. More and more, it's become the exception to the rule.
An example is a client who wants things top class, done correctly with everything spot on, will not tolerate anything in view be it in kitchens, gardens, swimming pools or whatever but is willing to pay for it.
Anything is possible.....but you wouldn't think so.
......and people are being taught to install to regulation standard only....not to that of a true, highly skilled trades person.
Although it's very important, it's not all about everything testing OK.