If you object to the Amazon example because the CEO was also the founder, there are many other examples of extremely long-term focused companies where that isn't true. A really good example is Uber. Honestly, Uber is probably far too long-term focused and it'd be better if Wall St punished them more. It's pretty hard to accuse Wall St of being short-term focused on that one.
That said, I totally agree with you that experimentation is good, and the LTSE is a valuable experiment. Maybe we can learn something from it, even if it's worse than what we already have.