I work in a startup that is building a software for radiologists that uses AI. From what I experienced so far is that the software is definitely not the problem. Our software already is better at detecting lesions, aneurisms and we are close to tumors too. Our goal is not to replace the radiologist but rather to decrease the error rate. But there is definitely a difference between training a model at home with perfectly preprocessed data and working with the raw 'real-life' data + monetizing it + making the UX/Ui for it etc.