Unsuccessful ones, ones that look more like bubbles, are built upon total dependence on external inputs and one-way processes.
Bubbles are not depending for the full 100% on external inputs. Bubbles are sometimes created beceause it happend in thhe past that they were working fine. But now people start to put more and more hope on/in that bubble, those same people who are already inside the bubble without realizing it that they are feeding; by rumours; their own bubble.
Alongside that aspect is the current situation of the niche where the bubble is made. You can blow up a ballon but you cant close it with just air, and you need the growthspace from inside to grow.
Funny, it was mentioned that we live in a adhd ttrading culture, why do you take 'slow' trading as the (best) standard? Why not use technologie to do something better? Offc, their must be a line drawn where involving technologie stops. And my culture, we are not like americans, so do not take adhd as worldwide granted behavior on markets.
(This topic is so general, with some very theoritical views on subjects where people all have diffirent views and understandings of. 'Culture' is the hardest one, politics, crime and so on come sideways with 'culture'. )