title_body: Why do lagers get made in tropical climates?
upvoted_answer: It's just marketing.  
  
  Lager fermentations are very clean so it tends to be a beer you want to drink in a warm and humid climate.  The breweries want to make beer that will sell very well locally, and that just happens to be lagers.
  
  At a commercial scale brewers are investing in temperature control regardless of ale or lager, so it's not a significant expense or savings one way or another.  So since they're spending the money anyway, might as well brew what people will buy more of.
  
  From the consumer perspective, it's cheaper to buy from a local company than it is to buy an imported beer in most cases.  So the local beer sells better than the import.