How much room is there for the promotion of copywriting in advertising companies?

Some small-scale advertising companies do not have full-time copywriting, which is called copywriting planning. The general promotion is to be the head of the department. For example, international 4A or mature professional real estate advertising companies such as Beijing Lansheng and Shenzhen Black Spider Advertising Company. There will be special copywriting, and it will be divided into many levels, including assistant copywriting-junior copywriting-senior copywriting-senior copywriting-copywriting guidance-copywriting director and so on.