@jonny the math that matters is not the economics, I've had intelligent, technical, savvy friends already today be like [warily] "AI, that I have been like 'it doesn't invent anything new' just solved a $1M math problem?" and have had to talk them down -- plagiarism company that steals and claims credit, steals and claims credit.
The economics are "what can justify a $3T valuation when none of the actual economics can", which is what this is.
@jonny
It would be very interesting to know what account tier they were using. Assuming it was one of the educational or business accounts, they very much do not have the right to use customer data. Presuming they were following the law, of course; I'm not sure that's particularly relevant here.