To become a Data Scientist, you need Business Skills, Computer Skills, Maths and Science knowledge. Ph.D graduates with Statistics specialization are good in statistics, but in general they lack computer knowledge.
Is it really possible to have the skills required for Data Scientist in one person ? How much time it takes for a person to become expert level data scientist ? Who are the right candidates to become data scientist ? ... Will post detailed article on these topics soon... stay tuned :)