> This is despite the fact that they are identical in both taste and colour.
The only way I could ever mistake Coca-Cola for Pepsi is if I were to completely lose my sense of taste. I'm quite surprised to encounter someone who considers them identical or interchangeable.
He's right, though, that I could change the supplier for airlines, browsers (or ChatGPT) and my world wouldn't be all that different. It would taste the same.