If I could make a few observations?
1. Few people like being told what to do.
2. It's far easier to get people to do things if they believe it is their own idea... at least in Western society.
3. Bonsai is an expensive pastime, if you're going to do it right.
4. There are a number of pointless conventions holding the art back, at least in Australia and the US. I'm not sure about other countries.
1. Westerners enjoy a radically different cultural outlook to that popular in the East. Individualism is stressed, over the social expectations of conformity that are the norm in many Asian communities.
2. A more focussed effort to educate the public, as they become interested or involved in the art, might work to establish a better understanding of bonsai. Of course, this is still subject to the vicissitudes of the teachers who attempt to impose their radical styles and ideas and values on their little portion of the bonsai world.
3. The major impediment I see, in our efforts to bring the concept of good bonsai to people, is the sheer cost, in terms of time and money, of obtaining a collection worth having. I'm sure I'd spend more on trees if I could justify it, like many people. There would be fewer poor trees sold in supermarkets and hardware stores, if it were possible to produce quality less expensively.
4. I also believe the art would be better developed if there wasn't this pointless obsession with growing your own stock from seed, or collecting your own trees and potentially damaging micro-environments. There's nothing wrong with buying partially trained stock from capable wholesale growers.
4a. Likewise, what's the point of the insane insistence upon only exhibiting trees you have styled yourself? I understand that everyone wants to play on a relatively level playing field but that should not stop anyone from buying pre-styled "finished" trees and enjoying them. If they want to show them, or maintain them, then they should be able to do that, too. The upper echelons of the bonsai world regularly trade and sell styled trees. Why is it wrong for amateurs to do so?
In fact, I recommend this path to people who want to get involved in bonsai. It is also the reason that I don't ever participate in the club scene, with its irritating, petty politics and its blathering masses of "It's all my own work but you bought yours as a 15-year-old stock tree, didn't you?" morons about its fringe.
Perhaps these are the real reasons there are so many who don't want to follow the traditional paths? There are too many impediments to actually doing it, to satisfy the short term gratification needs of the average interested bystander... and too many small-minded snobs lurking in the fold.