There are many reasons for this like due to lack of internate service, lack of awarness about bit coins, bitcoin is illegal in many countries, transaction through bitcoin are not broad e.t.c may be the causes for people not getting bitcoin.
"Lack of awareness about bitcoins". Yeah, that is right, If we just solve that then it will be easier for people to embrace bitcoin because even though there are countries that blocked or banned bitcoin they can still be aware on what are the good benefits of bitcoin or if bitcoin is a good investment. The main reason why people do not embrace or get bitcoin because they are lacking of awareness and especially knowledge.