Mr Perkins there seems to provide several feasible answers in his video, I think.
The larger issues are probably the same as the issues that plague every new organization. Most permaculture farms probably fail because most new businesses fail. A perfectly workable solution for a given landscape might fall on its face in the marketplace; a perfectly workable plan may work in the orchard and at the market, but require more (good) help than someone can find; Maybe everything adds up, but the person comes to find out they're not cut out for self-motivated manual labor, or extreme attention to accounting; maybe everything adds up AND the person is a great worker, but doesn't know how to manage people and things inevitably break down; maybe it's all sunshine and rainbows, until the marriage ends and the property gets vivisected. There are plenty of known threats to the viability of a young farm, and while Permaculture can help provide the tools to overcome many of those challenges, it's a little unreasonable to expect Permaculture to immediately and drastically fix everything.
well, at least someone watched the video before commenting
in order for permaculture to move forward, IMHO again, people need to stop getting
so butt hurt and defensive whenever there is criticism of some aspect of permaculture
it makes no difference what conventional ag or big ag does or gets
permaculture isn't in the same market
does big ag offer non-gmo, organic, pasture raised , no hormone anything?
does big ag work directly with the consumer?
one doesn"t have to engage (argue) with anyone
let the results do the arguing
as seen from the comments here,
most folks do not want to do permaculture as a profession
but just as a secondary income or hobby
which is OK (I'm the same)
but in the bigger picture
permaculture should be encouraging, training and supporting
those who want to "make the leap"
which is what the video is about