You clearly no clue about what it takes to make it to that level. My kid is 11 years old. He's in 5th grade. He has private coaching two weekday mornings per week before going to elementary school, has two hours every day after school during weekdays with his club team, and competes on roughly half of all weekends year round. He's in fifth grade and he'll top 500 hours of professionally coached practice this year in his main sport, and he's been working at his main sport for years already.
To get to the NBA or equivalent requires in the neighborhood of 10,000 hours of coached practice. It is built from years of mornings and nights and weekends and traveling and sacrifice and frustration and pushing limits. Losers are losers because they're lazy. Losers only delude themselves into thinking their losing is due to luck so they can stand looking at themselves in the mirror.
I could've put 50000 hours in and it wouldn't have made me play in the NBA. The hours your kid puts in have no bearing on whether he makes it or not. Genome does.
Is it basketball we're talking about?
Well, let's start. First, you need to be born in a specific country. India has 15% of the world's population and is yet to produce an NBA player. I'm not going to do the exact math here, but if feels like more than half the world's population is automatically excluded. You gotta be born in the USA or one of a handful European countries, or you have to move to these places before you're 15 or so. Does your kid satisfy this requirement? It's because of luck.
I can't recall the last time a player under 6 feet was drafted in the first round. The average NBA player is 6'6. The average American male is about 5'10 and the average male globally is shorter than even that. You have to be that height without incurring other issues that come with it. You can't just be 7 feet tall because of some pituitary tumor, and your frame has to be able to support your weight and height. Most 6'6 people aren't all that coordinated, so you have to win another lottery to be coordinated like a 6 footer. Remember that for the first 50 years of its existence, basketball was not a tall man's game. For a reason.
You talk about professionally coached practice. That costs money. Unless your kid was a child movie star, they don't have their own money at 11. Certainly not that kind. Are they lucky enough to have parents who do? That's another layer of fortune you have to add here.
Come the **** on. I know you're a right winger who is still somehow on this 16th century Calvinist kick of success-comes-from-hard-work and failure-comes-from-lack thereof(or a moral flaw in general), but I know even you're not this naive. We're not quite at that point yet, but science will improve over the next 50 years to the point where you'll be able to look at every newborn in the country and decide immediately with great confidence which one of them has any chance in hell making it to the NBA.
Zion Williamson's contract is non-guaranteed because he just can't stay away from sugary soda and big-bootied pornstars but hey, he's clearly worked harder than me at being a basketball player. And I, clearly, have failed at becoming an NBA player or a professional footballer or the greatest guitar player of all time because I'm a loser and I'm lazy. Despite putting in probably 10000 hours into each one of those between the ages of 10 and 30, at the expense of things like laying big-bootied pornstars.