My company is moving our main LOB app to .NET 10 in the near future. It's taken a while but has gotten to the point where .NET 10 has pretty much caught up to .NET Framework for feature support, and our take is that the cross-platform support, performance gains and newer C# versions are worth more than the stability of .NET Framework.

And the gap's going to keep growing - doing the upgrade now means future upgrades can be more frequent and incremental, rather than trying to move 4.8 to .NET 20 in a decade.

Unfortunely I have reduced my use of .NET, because some of the partner products that we use, or customers that were into .NET, took the opportunity for going into another technology stack.

Basically the kind of customers that were affected by the breaking changes, between Framework and Core, decided to keep the old stuff running in Framework, and consider other alternatives going forward.

Not sure how much these kind of customers matter to the .NET team's upper management in customer acquisition, but they surely lost a few along the way.

And now there is even CoPilot based migration tooling on VS 2026, because most likely there aren't that few that are still chugging along with Framework.

If .NET had a desktop UI for Linux it might be worth it for me, but we haven't gotten there yet somehow.