[rdtsc]

There is a concept of self-deception. During a con, a successful conman does very little, they "just" have to prime the mark. After they bite, then they fool themselves so to speak.

Just because VC have money doesn't necessarily imply they are more rational or better thinking. Everyone involved here wanted this to be real and true. So while on paper due diligence was done, unconsciously nobody wanted to lift the curtain too much and peek what's behind.

This is also very common with software testing. Often when developers are testing their own software, they are not very good at discovering bugs and so they end up in production. This happens because even though rationally they want to ship a better product, irrationally it is hard to get into a mentality of proving that the product you just sweated months on is broken, or bug ridden or unstable and so on. So tests are written but they are written to show make them pass and show that stuff and unconsciously avoiding the trick or edge cases that would reveal brokenness.