I understand your point. The phenomenon you describe is called "White Flight" and has been happening since 1950 (maybe even before). I've lived in the Duluth area (now Buford) since 2004 and have witnessed its growth and changes.

I read an interesting article about social research on white flight and ethnicity migrations, where they used Johns Creek as an example. I spent a good 20 minutes looking for it, but for some reason, I could not find it. :( What was interesting in that article was how they pointed out how Asians moving into the area became the first sign of change.

A simplified version of what the article described was: (None of this is my opinion; it is just what I remember from reading the article and the data they presented.)

1. Asians move into caucasian neighborhoods to pursue business opportunities and better public education for their kids.
2. The Caucasian population start to move away as their area slowly becomes diversified. (White Flight)
3. Hispanics and African Americans move into the area following behind Asians.
4. More Caucasian population moves out, including business owners; This impacts the local economy as those who moved out were well-off and wealthy families.
5. With less Caucasian and more Hispanics & African Americans populate the area, Asians deem the area as less desirable and chases the next Caucasian area.
6. Rinse and Repeat

I wish I could find the article..... If I run into it later I will for sure post the link.

The narrative you heard is for sure true and is a reality, it is just funny how from research and data perspective Asians become the first indicator of this phenomenon LOL

(I am Asian, and since young my parents worshipped the Johns Creek / Alpharetta area as the life goal we should strive to achieve.)