Theranos was a great idea. The problem was that they couldn't make it work and they lied about that to everyone involved. That's different from it not being a good idea in the first place.
1. Get a drop of blood 2. … 3. Cure all diseases
That’s not even an idea. It’s just magical thinking.
Theranos technology was the proposition to run smart blood tests on very small volumes of blood drawn from patients on-site. That’s really about it. They couldn’t deliver this service but they never promised any cures, bro.
I mean, the people who put money into Theranos later should have done better due diligence, but I don't fault the initial investment.