Do you just sit around doing nothing because nothing you ever do can be perfect? No, people practice and get better but even the best of us still practice. Singers flub up their own lyrics and hit the wrong note, but they don’t just stop trying because sometimes things are imperfect. An ideal is something to strive for and failure does not negate its value. Creative endeavors really need deadlines because they can always be tweaked and improved.
There’s also a huge world of different between coming up short of your aspirations and just not caring. The Swan and Dolphin are not the result of not caring, but are in fact the result of caring a lot. Eisner hated the idea that Tishman could do whatever and went to great effort, pains, legal trouble and expense to finally come to the outcome where Disney hired a famous architect for Tishman. Eisner’s judgement that the view would work was incorrect, and he changed his mind, but it wasn’t the result of apathy or disregard for the concept of sight lines.