I chair an international branch of the MIT Educational council, and I can confirm that for the overwhelming majority of the world, this is simply not true. For most of the world, there are enough EC’s or few enough, that everyone or nobody gets interviews. So for example, if you are applying from most countries, everyone will get offered an interview. If however you are applying from Madagascar (and I have just looked up the EC directory to get an appropriate country), we don’t have any EC’s so that anyone applying from there would likely have their interview waived. This holds true for almost all of the globe, with the single exceptions of India and China. In those two countries, there are so many applicants per EC that different rules apply. I have absolutely no idea what rules apply in those two countries, but it would be certainly possible that not every applicant was offered an interview.