Why do you think there is always a difference between:
A. the people who know best how something should be done, and
B. the people who end up doing it in a practical and economically-successful or popular way?
And should we educate our children or develop our businesses in ways that could encourage both practicality and invention? (do you think it's possible?). Or would the two tendencies cancel each other out and you'll end up with mediocre children and underperforming businesses, so the right thing to do is to pick one side and develop it at the expense of the other?
(The "two camps" are clearly obvious in the space of programming language design and UI design (imho it's the same thing: programming languages are just "UIs between programmers and machines"), as you well know and said, with one group of people (you among them) having the right ideas of what OOP and UIs should be like, and one people inventing the technologies with success in industry like C++ and Java. But the pattern is happening at all levels, even business: the people with the best business ideas are almost never the ones who end up doing things and so things get done in a "partially wrong" way most of the time, although we have the information to "do it right".)