Microsoft already partnered with Lisk, eventhough Lisk is not launching until May 24:
https://azure.microsoft.com/en-us/blog/azure-blockchain-update-6/No billion dollar company has started using Ethereum, even after 2 years of its existence. Some companies CTOs may be toying around and entertaining Ethereum to impress their corporate board and investors, but
NONE have actually started using Ethereum in day to day business operations.
Ethereum = Zero Mainstream Usage AFTER 2 YEARS.