It seems as though Microsoft is making some very interesting moves with its upcoming release of Windows 10 S, which is a more restricted version of the full Windows 10 for the education market, something Microsoft is looking to combat Google's Chromebook/Chrome OS combo with.
Microsoft is placing restrictions on the software you're allowed to install with Windows 10 S, with one of those caveats being that the software will only be available on the Windows Store - meaning no third-party browsers. This means we won't be seeing Google Chrome, Firefox, Opera, or Safari on Windows 10 S, ever.
Why this matters: This is a strong move by Microsoft, and it's something that would've been heavily criticized years ago as anti-competitive but the game has changed. Google is now a powerhouse in the education market and is eating into Microsoft's once dominant business, and could lead to Microsoft already envisioning a future of full Windows releases being more locked down to specific software or ecosystems.