There is need of custom model in a lot of businesses like you want to identify only a specific kind of product from rest of similar looking ones or find only de

There is need of custom model in a lot of businesses like you want to identify only a specific kind of product from rest of similar looking ones or find only defective pieces and where you cannot collect 10's of thousands of images from the beginning. Also pretraining is not only for initialization but also to improve generalization with less data.