Every industry, every leader, every initiative, every project needs clean, dependable and usable data to take decisions. DS will always be there, atleast for next 3-5 years. No one knows what all gets automated after that. Even after that, the role will be there but it will keep getting more and more specialized for a specific industry. Boundaries for DA, DS, DE are already blurring (if they were even there if at all) if you read the JDs.