I would say yes even while under contractual obligations a writer could refuse to show their work. This would depend on the contract i.e. if the contract was merely a publishing contract that dealt with the next 4 novels x writes will be published by y. However, if a writer is writing for a magazine or newspaper it is highly likely deadlines will require stories to be writen and turned in in a set period of time. I would also have to say that writing and coding are way different. You can never be certain what is "good" when writing but in coding if it works correctly and meets the clients needs then rewriting is unnecessary even if it would be desireable.

So, just my .02 writing is an imprecise science at best because it is based on audience reaction where as coding is based on specifications