Perhaps as a matter of diplomacy, just to get under his skin, they decided to insult him or pull rank on him ("my market cap is bigger than yours"), but they certainly didn't do it on accident. And honestly I can't imagine them needing to invent ways to get under his skin when there are so many contentious issues on the table.
Even back at Dell in the early 1990s there was some friction between sales/marketing managers and engineers
That's the difference between being an engineer and being one of the most powerful and respected CEOs in the industry.
Plus, the 1990s were a lonnnggggg time ago. The bestsellers about the casual tech company culture of the early 2000s are already in the remainder bin, because they've achieved cliché status. If you think the executives at AT&T missed all that, well, it would have been impossible for them to miss it, because they were shopping at Barnes and Noble and watching CNN just like the rest of us.
And yes, these are MBAs who work in the IT field, since large companies have the philosophy that management is interchangeable, and you don't need expertise in a particular area to be able to run it.
http://www.dba-oracle.com/dress_code.htm
The idea being that banks and that expect "professional appearance and behavior".
well, I guess you learn something new everyday.
I do agree with his point about first impressions. It's better to wear a suit and have them tell you jeans and a t-shirt are ok than show up in jeans and a t-shirt and everyone else is wearing suits!
"Very nice, Mr. Bateman, but while you were over at the Marine base getting your Florsheims shined, our load balancer went China Syndrome. We'll let your agency know if we need any more help, thanks."
This is a real issue at larger tech companies who must interface with older, established players. Even back at Dell in the early 1990s there was some friction between sales/marketing managers and engineers, with the former arguing that the latter should dress a little sharper in case they inadvertently got on an elevator with a customer.