Data Science employs Machine Learning owing to its high-value predictions. This improves the process of decision-making in real-time without manual intervention. It helps with the data analysis of large-sized datasets and the automation makes it easier for Data Scientists.
However, without data, Machine Learning will become obsolete as there will be nothing to learn from. It will only work as long as there is data to work with. Therefore, Data Science and Machine Learning work in conjunction to be of any value.
Data grows exponentially every second and this data can be capitalized on. Data is the new oil of the 21st century according to Siemens CEO Joe Kaeser. So, to answer your question, as long as there is data, Data Science and Machine Learning will still be around and for a very long time (as per experts).
While these two technologies will still be around, it is likely that it will undergo change to keep up with newer technology in the future and still stay relevant.
Intellipaat explains the future scope of Data Science in this video. Check it out!