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.
V4 is 2^32 or 10^11. You could fit an entire IPv4 with an entire IPv4 nested inside each one, throw them all away and repeat every day for 300 years.
Screw math. I'm still with the OP's darn rec'n'n, it's more truthy!
It's _massively_ bigger - (10^27)/(2^32) = 2*10^17. 17 orders of magnitude is not in the same ballpark (you could give every IPv4 address an entire IPv4 address space, and it'd _still_ be bigger (54 million times bigger)).