I think the majority of startups teach great lessons in how not to run a business. Some of the best lessons Ive learned is watching others as well as myself inadvertently blow stuff up and realizing that should have been done a lot differently. Every once in a while the stars align but what the tech media doesn't say is that the majority of work that goes on in startups is doing stuff that is experimental but typically turns out to be a not so great or extremely bad business decision.