Labour might be cheaper, but it is probably less efficient. The building that is going up next to me, which is a standard new condo construction - has 100 (that I can count - i.e. see) "working" on it.
The standard concrete pour that use to be used has been changed to a new mix (very recent I believe) - which means it is potentially patented?. The problem with old construction in Bangkok is that they will not last as long (maybe 70 years max). It is a problem with evaporation in tropical areas which had to be offset by mist being sprayed on (but not perfect).
If it was just cheap labour and cheap materials that made this construction possible, Africa would be awash in high quality projects. Which is not the case.
The reason I believe why quality construction & projects gets done elsewhere is basically what is considered acceptable along with competition. Toronto attitude has come to the point where they general public accepts crap, and the lowest common denominator is that we will build it for as cheaply as we can (problem with those that sponsor the projects and construction generally) and the people of Toronto will welcome it. This "cheapening" is quickly taking over society. Farm produce is not produced based on taste (tomatoes) - but durability, longevity etc. taste does not enter the equation. If 20% higher cost will bring a superior product - it is too risky and therefore "cheapened".
One thing that is interesting in the construction is that I believe the construction crews here have a higher number of women working on the project.