Since when was cost a factor? Try storing everyones' phone calls! Each person can fit on a 750M CD. It may be true that they haven't gotten through sequencing them all yet. Genomics England and Illumina (US) are the contractors. PM David Cameron is particularly keen, recently gave them £300 million. He wants everyone tagged 'within a generation'. And yes you can all ignore me and downvote me because it makes no difference. UK, US, Australia all the same. With your DNA on file - you are an open book.