Maybe it was not a defining moment for the world at large, but it was a defining moment for the US.
It broke the 90s economy. It created a lot of doubt in the US stock market about future terrorist attacks, causing an immediate run to pull out money, and starting a very quick, sudden recession.
As an immediate aftermath, all US airlines had to pause operation. When flights resumed, airlines had to find a way to make lost revenue, kicking off rapid enshitification. Though most airlines did not collapse, they hit hard times, further feeding into the collapsing market.
Prior to the attacks, the US was in a relatively peaceful period. In response to the attacks, the US started yet another war against the Middle East and has been at war with one country or another for almost 25 years.
It also justified the government to create a giant system to monitor people worldwide. The government set up secret courts to try Americans. People outside the country, were simply kidnapped and detained in Guantanamo Bay.
Now, many of these things are simply cyclic progressions or had been brewing long before September 2001, but the event creates a very clear border between before and after.























With prescriptions, it is not about what the customer wants, it is about what brands the insurance wants to cover (and getting a doctor that does not write a brand specific prescription). If an insurance company only covers a weird brand of a common (but expensive) medicine, the customer either has to hunt for a pharmacy that has it in stock, wait for their local pharmacy to order it (in either case delaying when the insurance company has to pay for it), or buy the in-stock brand without any insurance coverage. The insurance can still claim they cover the drug while paying less for it.
At one point, I was on a medicine that had a very high co-pay for the brand name and would not cover the generic. It was so high that it was cheaper for me to buy the generic uninsured instead of paying the co-pay.