According to experienced scientists with decades of experience and knowledge about testing blood, there were very clear problems with Theranos' claims.
Yeah there was no technical info on how they overcame the issues with actually maintaining the machines... and how they operated with so little blood.
Competitors and scientists were pretty skeptical. Word has it when they tried to pick up some traditional investors and started asking questions they just got BS and a lot of those investors walked.
From everything I've read and watched on Theranos they were committing major fraud. It's hard to blame investors where the company itself is creating false test results during meetings. As far as I can tell it's way worse than WeWork.
Somebody explain uBeam to me then. They're just a regular startup that everyone with high school-level knowledge of physics knows is bullshit, and yet they're still around.