No, it's not, it is many, many times larger than 'usable v4 space'. Like, if each of the hypothetical 10^27 displays was given a single IPv4 address we'd run ou

No, it's not, it is many, many times larger than 'usable v4 space'. Like, if each of the hypothetical 10^27 displays was given a single IPv4 address we'd run out and still need to assign billions of billions of displays.