I don't bother making anything run on linux unless it's meant to run as a service. It's just not worth the time and trouble to test it on multiple operating systems, probably with different libraries, just for what is a very vocal minority.
Not the comment you're replying to, but I also have a couple of internal winforms projects at work. They make it much easier to diagnose and debug issues with a backend service that works with GIS data, using libraries like GMap.NET. Come to think of it, the company's environment management tool is a Winforms application that gets used in every production instance. For basic UI tooling in a dotnet shop it's second to none.
Windows has a bit less than half the marketshare for developers according to the last Stackoverflow suvery. By not having a Linux and a MacOS version, you are losing close to half of developers.
There isn't as many C# developers on Linux and MacOS because the experience has been terrible for a long time and still is lacking to a smaller degree, you have the cause reversed.
> Microsoft understands, among other things, that they can't charge money for Linux tools.
It's the opposite trend going on, they embrace as much as possible Linux and port as much as they can.
Since they just focus on Azure and just milk Windows with ads and let it rot nowadays, I'm guessing it must be very profitable, otherwise they would stop.
I'm sure Azure is profitable for Microsoft. Microsoft are not even trying to sell development tools (the category of tools that would include LINQPad) to Linux devs.
They don't care about development tools period anymore, they just make most of their business on the cloud and most of it being very dependent on Linux.
