If ISPs gave every customer as many IPv6 addresses as are in the entire IPv4 space to distribute among their personal devices, and "every customer" amounted to

If ISPs gave every customer as many IPv6 addresses as are in the entire IPv4 space to distribute among their personal devices, and "every customer" amounted to the entire population of the world, that would use roughly 1 / (10^19) of the total space. https://en.wikipedia.org/wiki/IPv6 https://en.wikipedia.org/wiki/IPv6