A second problem with HACF
The first problem is the inventions (or parallel inventions or innovations if you want to be a sticker) that got ridiculous in s2 and most of s3. The second is that it apparently takes place in something like our universe, so none of the quartet really breaks through and changes the course of history. Their billion-dollar ideas come to little. None of them are a Jobs or Zuckerberg. Joe came close with his short-lived McAfee phase.
The writers could have been bolder and created a parallel universe in which they are actually the architects of today's computing instead of footnotes. And I'm sure season 4 will be more of the same - they'll diddle with developing software in anticipation of commercialization, but just be bit players. My guess is the last jump with be 1995, when it was finally commercialized.