It may have been dumb to you but what does that matter? The point of capitalism is that it's not anyone else's business. Things you may buy may be considered dumb to another. It doesn't matter in a free market where everyone decides for themselves and has their own reasons for what they buy. If it wasted money, that is on the people who invested in it.
With regards to Juciero, my point isn't "I think it's dumb so it shouldn't exist." It's "many people agree this is dumb and it shouldn't have had money poured into it given it clearly would not survive." It's that Juciero was a capitalistic failure that was treated like a success because Silicon Valley is out-of-touch and self-obsessed. I wouldn't call myself a capitalist, and I have no love for it as a system, but I get how it works.
With regards to Theranos, my point also stands. It's baldly evil on its face and shouldn't exist. Capitalism and "it's none of your business" are not excuses.
