I would say no, towards this particular question.
In my field of study, which is creative writing, I see two halves.
- The talent.
- The skill.
Naturally, writers, painters, and other creative professions need to have talent.
Sure, the amount varies. Some can simply make a good story, while others can make a single piece that last centuries. Of course, as we discussed here, sometimes, people just have little talent in this area, and more in others. A good example would be... well, myself in a reverse way. I'm in this area of profession, yet if I may put it bluntly, I completely and utterly suck at mathematics. I'm really happy others have expertise in that area.
Getting back to the subject, we have the skill. Of course, this can be taught to anyone. This falls where grammar, punctuation, and all of that dwells. No matter the country, origin, or style of living, we go through some sort of education, and naturally that includes the skill of language. The majority know the basics, and some go beyond. People who go straight into the work force, if their jobs and professions include a heavy amount of writing, they will learn to improve their skills there. Others go to such educational institutions like collage and universities. From here, I believe that the skill of writing can divert into many categories, from my position, I've learnt some that include the professional industry, yet on the majority is the creative skill, which includes words that weave a story into a neat, little web.
Basically, you can learn the skill, but talent comes naturally with the person.
Yet no matter what, you'll have a little bit of talent, it's just that there could be a limit.
Of course though, this can be brought out with exercises and a good/creative mood.
Going off-topic a little, just like what Dizzy said, I believe creativity is rather shadowed by the more logical side of the world. It is rather sad, and it makes me fear what is to come in the future. I believe we need to encourage more creativity in the world, so that the future writers may have their own creativity pulled out of them at a younger age. Mine was discovered recently in life, before that, I wanted to be a journalist, but not anymore, I have so many ideas that call to me, that I won't allow them to stay silent. So, I believe it would be great to see more younger writers.
Heck, my university is the only one in Australia (I think) with a Creative Writing degree, just because Tim Winton studied here. It reminds of a neat idea I had, here on The Escapist, we have RPs, which encourages creativity. Yes, those guys may have other jobs/professions in mind, yet it is a format that encourages good writing and ideas.
I tell you, the first school or university that has an assignment that allows a group of students to create an RP together, and do well in it. I'll give them a damn shout-out when I become an author.