A large corp-to-corp (or even person-to-corp) transfer does have a lot of money involved (accounts to figure out taxes, lawyers if it's for buying or selling ma

A large corp-to-corp (or even person-to-corp) transfer does have a lot of money involved (accounts to figure out taxes, lawyers if it's for buying or selling major assets, possibly international tax experts, maybe even an escrow service if it's between say a EU company and a Chinese company where they might not trust the other nations court systems). And then the bank might charge a fee too, although I suspect with accounts that large, banks would do what they could to minimize fees since that much capital helps them with loads/interest.