✔ 最佳答案
Actually, I think the Chinese sentence is somewhat strange.
一個業務(business)可以到達頂峰.
一個行業(industry)可以在一個社會變得飽和,容立不到其他競爭者.
一個業務發展已經飽和就有點古怪了.
So I suggest you to write like this:
[The business has reached the climax.]
or
[The line of business has become saturated.]