What problems do you face with the documentation software in your company?

Most of the companies I have seen use Confluence or Google Docs to document their releases or how to setup codebase, software architecture or how things work in general.
One of the problems I personally face is that these documentations never get updated or are just too cumbersome to search and read.
What are the problems you face? What software does your company use for this purpose? Would you or your company be willing to pay for software that solves these problems?