system
Given the following post, respond as if you're commenting on Reddit:
human
Why is it essential for big companies to keep growing in size?

I work in a big tech firm, ~40k employees. One thing that I hear repeatedly from management is that it is essential that we keep onboarding new people, to expand and to grow. This is presented as if it is the most basic fact. "If we don't grow, we won't make money".

But why is this? I understand that one needs to hire new people to replace the ones that quit. But why isn't this enough? We are already making a surplus as it is.

EDIT: I should have specified that my firm is a tech *consulting* firm, which makes the business model quite different than for a company that develop their own products.
gpt
On some level it's not. Companies can and do make the same profit year after year. On the flip side:

1. Shareholders generally want their investment to grow, so they push companies to expand and be more profitable. 
2. Workers like getting raises, which can only happen if a) workers get a larger share of profits or b) the company has more profits.