I'm sure it's a profitable field for the future.Industrial automation is huge and the technology that comes with it can bring in massive sales. I found a reliable supplier Eltra Encoder, it is fast developing company that supplies industrial automation equipment in Europe and throughout the world. They offer encoders here
https://eltra-encoder.eu/catalog/absolute-rotary-encoder [eltra-encoder.eu] with best prices for rotary and linear encoders.