Being rushed or designate time to be creative is hard, there has to be a balance of on/off to allow creativity to happen from anyone.
John Cleese probably put this most eloquently with "closed" and "open" states to allow creativity to happen in the human mind in this talk on how to be Creative [1][2]
Now here's the negative thing: Creativity is not a talent. It is not a talent, it is a way of operating.
MacKinnon showed that the most creative had simply acquired a facility for getting themselves into a particular mood -- "a way of operating" -- which allowed their natural creativity to function.
In fact, MacKinnon described this particular facility as an ability to play.[2]
Entertainment companies like Pixar, Valve, HBO, Netflix, independent standouts, etc, know how to create systems that help people get into the "open" state to create. Good software companies/game companies do as well from design to development and onward.
[1] https://vimeo.com/89936101 or https://www.youtube.com/watch?v=9EMj_CFPHYc
[2] genius: http://genius.com/John-cleese-lecture-on-creativity-annotate...
It's just there are so many suits trying to extract money using programmers that causes all these discussions, and there are to few good programmers. I don't know if there was any other time in human history that there was a skill so in demand and with such a limited talent pool.