>>7758436
If the person has the artistic cognitive capacity aka talent to do so. Raw dedication, practice, and study are just parts of the equation; the individual has to have innate ability to clear certain thresholds of development. Even among top tier pro working artists, like trad animators, who draw for hours on end, you see different skill levels. Many animators will work on countless projects and never "level up" beyond just another name in the credits, somebody who animates background characters, because they never reach the skill level needed to adequately animate more important scenes and/or characters. I've been drawing for a (relatively) long time, and despite my best efforts, I regularly see people who started years after me, some of whom were even my fans, exceed not just my prior skill level relative to their amount of time invested in art, but also exceed my CURRENT skill level. Similarly, I have found myself surpassing the skills of artists who have been drawing longer than myself.
It fucking sucks, but the idea that just werking hard and engaging in "targeted practice" is all any aspiring artist needs to become god-tier, not to mention doing so in any short amount of time, is laughable. Is it enough for some? Absolutely. You can find plenty of talented artists who manage to go from prebeg skill to consistently putting out quality, pay worthy art within just a year or two, but for every one of those artists, you will find hundreds (if not thousands) of other artists who slave away and produce an entire body of work spanning years of effort, with a level of which never manages to surpass a level of quality that one of the previously mentioned talented artists were at for more than a couple months.