Comment by fragmede

> The difference in divisions/people/tech/resources doesn't explain anything for me. They're both the same company with the same CEO, whether it's one business unit or a dozen.

Then you've not worked in large B2B companies before. Eg Apple pays Google money and Google pays money to Apple, any perceived public rivalry goes out the window as far as business between the two is concerned.

If you're the CEO of Comcast, you've never even heard of this small time ISP, you have far bigger things to spend your time on, and the "upstream" business unit of Comcast really doesn't care what you're doing, so long as your money's green. It's all business. See also: Netflix using AWS despite Amazon having a streaming video service of their own.