A company's value is still the present value of expected future cash flows to investors, right? For 2 billion and 15 yrs horizon, that's about 130 million in dividends a year. Profits still a bit higher to account for capital needs of the firm. That's quite the trajectory.

Another thought: are VCs and funds transparent about in what round they invest their own and the funds money? Can they sell their own series A investment in subsequent rounds with / without disclosure?