What does a 300% increase actually mean to Amazon itself? How exactly do IP addresses cost Amazon anything to hold onto, anyways?
Did the "wholesale" cost to them jumped from $0.00001 per year to $0.00003, or from $10 to $30? Because I severely doubt the cost to maintain a list saying amazon pretend-owns some made-up computer numbers costs anywhere in the same galaxy as a "tens of dollars per number per year" magnitude.
If it does cost them that much, then whatever organization is in charge of issuing these numbers probably needs much tighter international regulation.
Actually they do cost a lot of money. All the so called "free" ones where given out years ago. In theory at least if a company were to stop using them they were suppose to be returned to the organizations that control them but that does not happen in the real world.
I know years ago when Nortel went bankrupt they had a number of large IP blocks. They had a class A block and some other class b and c blocks. I know microsoft paid a lot of money to get control of some of them.
In effect they are scalped by who ever has control and sell them to the highest bidder even though they are not suppose to be able to do that. Many companies that used to run their own data centers needed blocks of IP addresses now that they run in the cloud they no longer need them. I know a company that I used to work for traded blocks of IP for free data center services for a period of time to cloudflare when they moved their stuff to the cloudflare data centers.
There are actually a lot that are not being used properly. Like microsoft many of the very large companies that have been around for years still use public IP on their internal lan even though there is no need or direct connection to the internet. This was all back in early days of the internet where it was not as important to have massive levels of firewalls between your internal networks and the internet. Home internet was via dialup modem and only very large companies and colleges has real internet access.
Someday maybe some accountant will decide the cost to redo all the internal IP blocks is worth selling the public IP.