"none of the top tier private equity firms invested in Theranos. When they asked to look at the technology, Ms. Holmes always told them: "It's a secret." Red flag"."
Yup. Only it was even worse that that. Fortunately, the top-tier VC generally have good legal counsel on the IP side to axe difficult kwestshuns and do independent due diligence on third-party technology, among other things. ... and then wave them off from an imminent crash on the fantail ramp - nothing is worse than LOSSES. Quality VC will do almost anything to avoid being tied to LOSSES. LOSSES mean partners who supported the investment are often told to leave. Prestige points are gutted - by individuals and by the specific fund(s) and partnership. Nobody wants to touch junk that can turn into a LOSS - that's a career ender. Seen it many times - a partner has 2 big wins, 8 decent wins, and then a notable LOSS - and they're G-O-N-E. Sometimes forever and everywhere.
Loser start-ups/restarts are often forcibly merged into other winners controlled by the specific VC or their 'friends', just to avoid the loss of face of the VC. Sweep the dirt under DaRug.
Wish I could say more about Thanatos (the correct name, IMO), as there is a lott of inneresting stuph. Much more than is in the WSJ article and other published stories.
Butt I can't. At least nott for a very long time.
Metaphorically, shades of ZZZZBest ...