Obviously, it depends on what type of project. Nevertheless, I think that that Design-Build-Operate-Transfer or Design-Build-Finance-Operate-Transfer are the most likely options as they require the design-builder to invest in the post-construction phase which greatly reduces the bias toward making the asset as cheap as possible.
I agree, developing countries have little funding but great needs, so also would insist that great control be maintained on the cost for service modeling, so that consumers aren't penalized and end up in debt - govt sets price and doesn't lose sovereignty by owning assets at end of contracr
project delivery methods like Design-Build-Operate-Transfer or Design-Build-Finance-Operate-Transfer need to be regulated by the public contracting law and require knowledge and experience in such methods which is not the case in many developing country.
It is a great research topic to be done. I think by including the developing countries, you wanted to emphasize the negative impact of the external variables such as economic, political, social, and regulation, etc. I am doing a study now to explore the impact of different delivery methods on the performance of each of the main stockholders (owners, contractors, designers, etc.). But I did exclude the impact of the external variables because the research is focusing on Libya market. I suggest to do such research using GPM (general perfomcne model). I will be happy to share with you more info if you find it interesting.
The question has many layers and the more you investigate the more you develop a sense of the type of contract to be implemented in certain regions. As what Mr Douglas D. Gransberg mentioned those two types may serve the purpose in the general view of the condition in the developing countries but there are many complications that may arise due to the developing nature of those countries and hence the chosen method may be doomed eventually, the question needs to be answered in a systematic, multi-criteria solution that may be programmed to serve the particular country. Nevertheless, the subject is one worth exploring.
Many thoughts will point to life cycle cost. That is important but something else matters more - social engagement. Infrastructure must engage better with the complex social dynamics of the communities. Only then will we improve the low return on infrastructure investment. Yes, it is complex but there is the essence of scholarship. We must improve return on infrastructure investment in the low income countries, and it will take infusing true meaning to PPP (at policy and project levels). Cf. Article Parsing Competitive Dialogue in Public-Private Partnerships:...
This is a great question. It truly depends on several factors, and this decision will be based on unique internal and external factors of the public agency. As mentioned by Dr. Douglas D. Gransberg, DBO or DBFOT are viable options to consider if there are concerns regarding operations, maintenance, or funding. However, the public agency may struggle with these types of delivery methods, as they must truly understand the intricacy of administrating these type of projects delivery approaches. An agency may also prefer to use a construction management at-risk (CMAR) delivery approach for their project. CMAR allows the agency to be intimately involved in the project and be capable of leveraging the constructor's expertise earlier in the design phase.