Microsoft has done Forward Deployed Engineers; they just weren't call that. Nowadays, most of consultants are focused on Azure since that's where money is.

Windows ecosystem is not Microsoft focus. It's in supported phase where Microsoft will make some updates to it, but they are not spending a ton of money or attention on it.

it's not just windows.

looking at azure - the traditional .net shops will insist on mssql instead of cosmosdb - when cosmosdb might fit their needs.

so many things wrong in the m$ ecosystem that could be fixed with m$ showing a little bit of care and deploying knowledgable engineers or resources to empower their customers.