Nice writeup, wish more startups who didn't succeed did this though understand not easy thing to write so kudos.
One factor to success is timing, as someone who lives in UK around London and is seeing (slowly) greenbelt getting developed on perhaps the market might be moving towards you in the next 5 years.
I would agree but I doubt it will become more of a thing, too many seem to not be willing to accept failure or show vunerability. This will always be rare in the start up market as long as bravado and fake it till you make it is still a thing, which it is.