99% of companies? Definitely not. The skills needed to do DS in business or healthcare are not very correlated with doing DS for the physical sciences. Which is the whole point of this comment thread, sure you can understand DL, but you also have to have an understanding of the field to know what type of DL to use. For example, in my role, I came with knowledge of machine learning but had to learn complex fluid physics to be able to know what type of DL techniques to apply or develop.
