As usual the direction of causation is a bit difficult to tease out
Even if you do manage to tease out causation tech and other "sophisticated" industry startups are also just the tip of the entrepreneurship iceberg.
The bulk of the area under the curve of a city's wealth is the long tail of blue collar people who wouldn't voluntarily associate with the kind of people who go to Starbucks starting and making moves to grow businesses that HN snobs don't even notice.
"...tracts that received a Starbucks saw an increase in the number of startups of 9.1% to 18% (or 2.9 to 5.7 firms) per year, over the subsequent 7 years. A partnership between Starbucks and Magic Johnson focused on underprivileged neighborhoods produced larger effects."
Seems like third places have strong effects here.
If you read the article, you see that the effect was pronounced in lower income areas where a natural experiment was effectively run with Magic Johnson's intervention. Which kind of goes directly against what you are saying.
For instance, what if Starbucks only decides to move into neighborhoods that have reached a certain level of economic growth (ie number of households, number of business, etc…)? Neighborhood economic growth would likely attract entrepreneurs as well, and we wouldn’t be able to conclude that Starbucks had anything to do with entrepreneurship growth.
Said a different way, would adding Starbucks in the middle of the Atacama desert grow Peruvian entrepreneurs? I mean come on it’d be the only third space around!
I can’t read the full paper because I don’t have a subscription, but the fact that they don’t call this out in the abstract makes me doubt it’s a meaningful conclusion.
Not long after, this Ithaca company
opened up a shop in Brooklyn and won an award for best coffee in the city, half because they have great coffee, half because they had no competition. It is better now, but the standard for gas station coffee is vastly higher thanks to things like
https://concordiacoffee.com/products-tag/convenience-stores/
[1] An astonishing hotbed of conformity. Sitting out in front of the headquarters of Fox News I was told that my wife and I were the freakiest looking people they'd seen in NYC and we only had matching costumes of t-shirts, jeans, ALICE packs and boonie caps with plastic flowers.