What's the incentive for anyone to maintain an archive node in ETH?

Is there a possibility that we might some day lose the history of Ethreuem - i.e. the Global State at some historic blocks?

Like most validators (full nodes) just store the current global state - not the historic ones. What incentive would anyone have to save terabytes of data containing the entire Ethereum history? (More importantly: what use would this have?)

Also: why don't people upload the entire history (archive) of Ethereum to public repositories like Zenodo/archive.org? Instead of waiting for hours for it to sync from other nodes, wouldn't this be more efficient?