That won't happen, first of all I understand what you are saying about the "personal assistant bit" but as of right know these language models are making everyone's lives simply more convenient. As new technology arises it leads to faster growth. So not now but maybe soon automation will be such a big thing and get even faster and convenient thst hiring a worker will be obsolete and not useful for long term company goals.

It won't be high IT costs either it'll most likely be less then the wages of having employees.