That would't make business sense. I think this move is a strategically great move of Microsoft.
The price of operating systems is steadily approaching zero. macOS updates are free and the OS comes with the hardware. ChromeOS is free. Microsoft already provides the license for free for smaller devices. PC sales are slowing and that's what moves OS licenses. People have fewer reasons to upgrade. What Microsoft realized is that hardware and services are the future, not operating system licenses. And to capitalize on that, they need their software to run everywhere. That means Visual Studio for Mac and SQL Server for Linux.
So no, I really don't believe helping the WINE project is a bad move for Microsoft at this point. Anything that increases adoption of Microsoft software and services is what matters now.