Your point was that "they are being replaced by..." not "The market expects them to be replaced by...". The former would only be supported if their businesses were already actively being displaced (which may very well be the case), but the stock market only supports the latter.
All of that being said, I do think what you're describing is happening, or at least will happen. I just don't think people placing bets on it happening counts as evidence.
The former does far less to support your point, because it's only indicative of what people expect to happen. It is not actually evidence that their predictions will come true.
