Count me skeptical about of some of these 'self-made' billionaires. Pinduoduo for example, as with many Chinese companies, has been accused of falsifying revenues to pump stock prices. Yes, this stuff happens in the US as well (we all remember Enron and Theranos), but to what extent, are the statements of these companies transparent and well-audited, and regulated by government differs by region. And Bitmain? Is it t…
It's not a big enough industry to support their valuation. Many companies have developed clever equipment for the film industry over the decades[1] and none has been valued at $15bn for it[2]. As an example: Panavision sold for $622M last year.
They really need to (edit: continue to) be selling to consumers. That said, I agree completely about their quality and success.
[1] - Check out some cool stuff here: https://camerarevolution.com/
[2] - Kodak might have been, once upon a time, but I can't find a breakdown of their motion picture revenue so it's hard to say.