Microsoft's main monetization strategy is to get people to run their code on the Azure cloud. If it means running code in any lang, on a linux vm in Azure, so

Microsoft's main monetization strategy is to get people to run their code on the Azure cloud. If it means running code in any lang, on a linux vm in Azure, so be it. If it means giving away dotnet, so be it. If it means that dotnet on AWS is also popular, so be it. They're pretty clear and open about that, you don't have to look for hidden motives.