Earlier quoted context omitted.
Lots of things are quick, simple and painless, but also utterly useless. If the labs don't work, how did they prove it could be all of those things? I like public prices and a nice phone app, but that's completely peripheral to the actual objective of real, reliable, verifiable medical data.
My understanding is that they've had issues with just some of their tests, not all of them. For instance, I wouldn't call Google useless if it couldn't answer reliably a small percentage of my queries. Yep, I know it's not a perfect analogy, but still. Theranos could ditch the faulty tests and provide only those which are reliable, and the experience they would provide would still be superior to that of other labs, b…
You're right there are a few labs they do on commercial hardware that does work, and I think they're allowed to provide a test (for Herpes I think? could be wrong on specific test) that is inherently based on very small sample sizes. As I recall though, none of those tests use any new tech at all, and if it's an old blood test then it's not going to require less sample, therefore not that much less painful re. needles anyway.
Take that all away and you have a nice app and pricing experience. Pluses to be sure, and I'd love those things to happen more in medicine, but not very innovative or well positioned to take down $10B megacorps.
Lab tests aren't 100% reliable either, it's true. But the nature of that unreliability is understood and the value of the resulting tests are well established to be related to a clinical outcome. The main criticism of Theranos is that they never put themselves to that kind of test or scrutiny.