The central IANA pool of IPv4 addresses is expected to run out any day now, when the last five /8 address spaces are distributed to the Regional Internet Registries. This means that anyone who wants to join the Internet with a permanent address will either need to buy one from an existing owner, or look into moving to IPv6 instead.
If your organization needs more addresses in the future and doesn’t have an IPv6 migration plan – you could be in serious trouble very soon. Time to start on your research.