More worrying (to me, anyway) than the potential to run out of money is the Wayback Machine's policy of permanent, retroactive exclusions. A copyright holder,

More worrying (to me, anyway) than the potential to run out of money is the Wayback Machine's policy of permanent, retroactive exclusions. A copyright holder, rogue admin or anyone who buys a used domain can immediately destroy the entire history of a URL they control. This isn't "accessible to everyone" and it definitely isn't "forever." I understand that rights holders, etc need a certain amount of protection but this policy hamstrings the project. If content can be removed, the archive fundamentally can't be trusted.