Here's kinda the problem though: you can buy a /24 on the open market for 6.5k. If you rented out all 256 of those for 1 dollar each per month, you'd break even

Here's kinda the problem though: you can buy a /24 on the open market for 6.5k. If you rented out all 256 of those for 1 dollar each per month, you'd break even in a little over 2 years. Instead they sell for 2 bucks per month. Now, either there is some huge risk that ipv6 undermines the value of ipv4 address space in that time span, or I need to start buying up /24s and renting them out.