STEM (or similar endeavors) are no such thing and never will be. Progress in these fields require the entirety of human virtue (and perhaps vice) - over and above that which can be strictly measured, categorized, in-calculated or trained. There is no good reason why any part of humanity should be under-represented in these undertakings.
There's nothing really stopping anyone from playing or enjoying a game, and as kids back in the day we used to play for fun on schoolyard courts. The problem is cultural; we as a culture have not really valued sports as recreation, but as either professional calling or consumer activity.
Trying to argue from the outlier really doesn't work as you said, but its also more of a cultural issue that we really don't value participation in sport over production of it.
So for you culture has no impact on an individual? Why should a particular field of human activities represent equally all the subsets of human groups?
Individuals are part of groups and groups have their inner dynamics and features.
Why are they more male chefs with 4 Michelin stars? Should there be an equal representation of women? No.
Because Whites don't face systematic discrimination in (or in the pipeline leading to) the whole host of fields where Blacks do, so taking a shot that is about as reliable as investing all your income in lottery tickets if you have the signs that you might be able to make it to shoot for a pro basketball career isn't as likely to make any kind of sense for Whites.
"Forty Million Dollar Slaves: The Rise, Fall, and Redemption of the Black Athlete"
For those who may pass judgment based on the title and the inclusion of the word slave, I leave this NYT review from historian Warren Goldstein as a mark of quality. [0]
[0] https://www.nytimes.com./2006/07/23/books/review/23goldstein...
> During the NBA's 2016-2017 regular season, 66 percent of TV viewers were racial minorities, according to data from ratings provider Nielsen: Blacks made up 47 percent of the audience, Hispanics 11 percent and Asians 8 percent.
For STEM, or computer programming and math at least, it's far harder to know. Certainly there are very few black people in tech/math, at least at the higher levels.
Perhaps part of the problem is that empty virtue signaling (like banning the terms "master" and "slave") is easy, but actually doing the work that would really matter is hard. I spent a couple hours helping a black kid polish up for his Google interview (he made it).
That's something, but it will really take serious tutoring and a society wide scale to bridge the gap. And other socioeconomic factors might still prove overwhelming.
And for gods' sake, the whole "girls that code" thing needs to die right now. Can you imagine how a young black man would be affected by that?
so then by that logic, you can argue why there are so few whites in basketball must be that they aren't as tall and muscular.
Any decent sized ethnic group could dominate a profession if they wanted to.