Did you read the article? The author is clearly referring to where we were at the beginning of the 20th century w/r to air travel (it didn't exist but was associated with a modern utopia), and where we were at the end of the century. It's a romantic lament, to be sure, but if you actually read the article the sentence fits as a lede.
And as a Jew, those epic failures of humanity, to me, provide a stark relief to the promise of globalization afforded by air travel. They represent the breakdown of (slowly) dying nationalistic geopolitics. Air travel was one hopeful cure made ugly in reality.
That comment above is really bothering me. I suppose it's a mix of the callous disregard of the context in which the sentence lies and as a reflection of where we sit after maybe 15 years of a popular worldwide internet. To me, this quote now springs to mind:
"One of the saddest stories of the 21th century is the fate of human communication."
I also find it unusually bothersome. We all feel like being snarky bitches sometimes, which is mostly okay. I just expect those posts to get downvoted here.
In a Q&A at UNC in 1996 (part 1 of which is linked below), Warren Buffett noted that doing the math from the Wright brothers all the way through 1996, the airline industry overall had yet to make a dime of profit.
The silver lining is that perhaps that failure is wiped out by the amount of unrelated profit-making that flight has enabled. But it's still quite weird that flying passengers around is so hard to build a business around.
Or the Holocaust.
Or Stalin murdering 10 million folks.
Certainly one of those three.