Yes they did. And some of it did happen at much slower pace. For example, the job numbers of secretaries were significantly reduced. Also, the outsourcing, enabled by technology, had great impact on job market in us. The thing is this trend will be faster and broader with AI, due to universality of it and due to general increased rate of technological progress. If in the beginning of 20th century people had lots of time to adapt, when horse carriages were replaced by cars, nowadays I am not sure it will be that easy because it will happen faster, and new jobs for people might not be generated in the same amounts. For example, when drivers of all kind are replaced by AI drivers, there are very little new jobs will be generated, and not of the kind that drivers could do.