Externalities may be addressed by either a tax / credit or some other public policy, public
ownership and management
of the commons, or privatization
of the commons, or through court actions — each option may have it's own costs — for example, the large - scale privatization
of the climate system may be impractical with given technology (analogy with toll roads), and even without that, it has at least an aesthetic cost (nature is supposed to be nature; and psychologically, humans may benifit from some amount
of public space) and perhaps scientific (ie nature — in this context, nature as it is with relatively small impacts
of humankind — is not nature if it is not being itself) costs; there may be inefficiencies in the court system that could be bypassed for
issues that are easily addressed with legislation (unless we had a class - action lawsuit on behalf
of all people now
until the year).
Ownership of foreign investors in some sectors might be increased to 100 % instead
of 70 % although this is not certain
until the official New Foreign Capital Investment Law is
issued.