The .5% thing, I still maintain (in my optimistic delusional way) is a slight misrepresentation.
Well, it's certainly untrue from a statistical perspective.
IMO
90% will never be published, no matter how long they try. They either don't have what it takes or use the wrong methods to learn.
9% will gain the necessary skills if they put in the effort.
1% already have what it takes and just have to write the 'right' manuscript to get it published.
Most of us here at AW, I believe, are in the 9%. It is my guesstimation that it takes about five years on average for someone in that 9% to reach that coveted 1%. Some take longer, some less, some go to school, some just write a half-dozen manuscripts to gain the skills. Many of us have already been several years on that road and are getting close, but ultimately, if you have the talent and you stick with it and work in the right ways you'll get there.