It's still possible to render similar kinds of controls in Windows. It's evident by old software that is still shipped in Windows.
But judging by the abysmal state of Microsoft modern UI toolkits, and Microsoft's complete inability to adhere to any consistency between the different frameworks that render toolkits, I just don't see any way Microsoft could offer cross-OS theme support that would work in any meaningful way. This was possible up to and including Windows 7, but then Microsoft just derped in their UI development, and it has been more and more embarrassing with every Windows release.
But judging by the abysmal state of Microsoft modern UI toolkits, and Microsoft's complete inability to adhere to any consistency between the different frameworks that render toolkits, I just don't see any way Microsoft could offer cross-OS theme support that would work in any meaningful way. This was possible up to and including Windows 7, but then Microsoft just derped in their UI development, and it has been more and more embarrassing with every Windows release.