indeed some of the largest corps and banks in the world have been paying attention to cryptos since early on. especially huge list on the Enterprise Ethereum Alliance: https://entethalliance.org/members/
still i feel they've missed their chance. they either didn't have faith in cryptos or were far too confident in their plans to act in time. they have a host of other issues to deal with now, and don't have the resources to prevent the rise of cryptocurrency. liberation.