So given a required rate of return of 5% - $16B is how much you would pay for consistent risk free, net inbound cash flows of $800m per year, in perpetuity. On

So given a required rate of return of 5% - $16B is how much you would pay for consistent risk free, net inbound cash flows of $800m per year, in perpetuity. One way of getting that would be 800m users generating profit after expenses of $1 each every year. This is a chat app that is completely and totally replaceable with irc. No really it is. $800m per year in clear profit. Is that really feasible in any way? How? What's the bait and switch here? (With facebrick it was the surveillance nobody knowingly agreed to. Is there something like that here?) Can anyone do a back of the envelope calculation to make this price make sense?