I think it's more about potential TAM than the current product. The hypothesis is probably that there will eventually be a winner in each vertical, and that $$ can mint the winner.
Aah, that's insightful. I do believe there will be winners in some verticals but at the same time it seems like OpenAI is cannibalizing its own (SaaS) customers by making stuff like Code Interpreter available on ChatGPT itself...