So many negative comments here! The fact that one of the top players in a new market segment with significant growth potential can raise $13B at a 20x revenue valuation is not the bubble indicator you think it is.
It's at least possible that the investment pays off. These investors almost certainly aren't insane or stupid.
We may still be in a bubble, but before you declare money doesn't mean anything any more and start buying put options I'd probably look for more compelling evidence than this.
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