I think it's about time that the following net blocks get forcibly reallocated.
NetRange: 126.96.36.199 - 188.8.131.52
OrgName: General Electric Company
NetRange: 184.108.40.206 - 220.127.116.11
OrgName: IBM Corporation
NetRange: 18.104.22.168 - 22.214.171.124
OrgName: Xerox Corporation
NetRange: 126.96.36.199 - 188.8.131.52
NetRange: 184.108.40.206 - 220.127.116.11
OrgName: Hewlett-Packard Company
NetRange: 18.104.22.168 - 22.214.171.124
OrgName: Apple Inc.
NetRange: 126.96.36.199 - 188.8.131.52
OrgName: Ford Motor Company
That's over 16 million unique IP addresses per company, Apple is the only one that appears to even use their assigned range for their publicly accessible websites.
It was wasteful to give private companies in the US entire /8 ranges, and in the case of HP, 2 full /8 ranges.
This is just a small example, the US military also has large portions of the IPv4 space for their own mostly internal uses.