You could have real estate in the heart of Manhattan that you make $0 on, but that doesn't make it worthless because of the potential of that real estate.
We know highly trafficked websites (and apps) can make billions selling ads. My guess is that investors saw value in the virtual real estate of Substack so that $650m might not be as unreasonable as it seems on the surface.
Valuations are based on future performance, not current performance. If they're going to do $100m in revenue this year then the valuation is perfectly reasonable.
But I'm just guessing. It might be as unreasonable as you suggest. I'm just saying there can be cases when that kind of valuation would make sense if the potential for higher future revenues / earnings exist.
In the public markets, maybe. In the VC markets, valuation is more linked to how much VCs like 'the idea' as opposed to whether they think it could succeed .
What next the same introduction to every startup pitch deck ever - “if we capture $smallPortion of $hugeMarket we can be worth trillions”!
Also I was just using ads as example of how digital real estate can be monetised. I'm not a Substack user so I might be mistaken, but I believe most of their revenue comes from their subscription model. The point I was making was just that if you create something that millions of people use whether or not you're aggressively monetising it today, there is still some theoretical value that you can assign to those eyeballs and that engagement.
Also see Yahoo. Yahoo was one of the most trafficked websites for almost two decades and couldn’t really profit from it after the dot com bust.
Same way that WeWork was 'valued' at $50bn, before they revealed their full financials to the public. Then the IPO collapsed; the company was worth $10bn tops, and most of that is in assets they purchased during Softbank's dalliance with Adam Neumann.
The same Adam Neumann that Substack investors A16Z have given $70m to to develop a carbon credits trading blockchain. I shit you not.
[1] https://www.dcpartners.solutions/2022/02/agillion-what-was-i...
Managing the reliable sending of millions of subscriber emails is expensive.
Mailchimp charges $12K/year for 150K contacts and 180 emails/contact/year.
(Above that is "call us" pricing.)
At that rate, it is about 10c per contact per year. Substack has 500K paying reader-subscribers, 10-20x that in "total readership", whatever that means, and "millions" of readers (but I believe those are web viewers).
https://backlinko.com/substack-users#how-many-paying-subscri...