If you mean that Microsoft has a strategy w. r. t. blockchain technology, then yes: The big tech players like Microsoft and IBM do have a strategy, and their commitments to the technology as a whole is not just a reflex. If you mean the ETH network? I am not sure. Maybe they like the innovations, support the EVM and solidity, but let the network go its own way, which includes dying. Solidity and the EVM (with or without ETH) may live on in azure's blockchain ecosystem. But lets see how their offerings look like in, say, 1/2 year from now...