If Companies, give training, to employees, at some point of time, when technologies advances, then also , they must give training.

Yes this is correct. A training must be in placed to update the skill and knowledge of the employee. 

of course technology itself require training  technology with trained employee give  the maximum output

You assume that most companies are associated with technologies. However, if they are then it is a critical thing to update training. Otherwise, take the profits.