Interesting thought. I think most issues stem from bigot assholes who consume the produce but are not allowed to due to their background/upbringing/social "norms". And those within their normative set not willing to provide, because of the same background/upbringing/social context.
Also, w/o currency there will be other forms of compensation, like a certain amount of work time, or... (p.e.) a handful of apples... due for a certain set of services.
Additionally there is always a percentage of plain idiots who would socially not be able to ascertain this kind of services w/o paying, and these seem to need to demonize the servicer to feel better about themselves.
Sry if I busted this comment, brain is fried after work.
" The material is not the root cause, rather inadequate roof maintenance, which permits water infiltration, and decisions by building owners as to repair or the replacement of existing roofs, which is a part of cost-benefit analysis."
"he almost mocked the inability of the west’s $40tn economy to organise a battlefield defeat of Russia’s $2tn economy." <- this really bothers me. There is no will here for Ukraine to succeed.