As IPv4 addresses are running out rapidly, a time will come when there will not be even single IPv4 address available for allocation. But, huge number of devices will still be running on IPv4.
However, if someone wants to launch server in that time, they will not have IPv4 address available. They will have to use IPv6 only. (Even if they want to listen using Dual Stack, they still need to have IPv4 address, along with IPv6, for their server. Please correct me if my understanding is wrong here)
Now, what would be it meant for them, as existing huge base of IPv4 customers will not be able to connect to their servers ? How this situation can be addressed ?