They don't want you to go to another platform for anything.
Maybe they want to steal google's OS
Maybe you present a minority of the user base and this is not targeted to you. So, yes.
WhatsApp or whatever other messaging apps. Banking apps. Pocket. Actually decent ebook reader. Actually decent podcast app.
The main reason to want these apps on windows are mechanical keyboards, mice, and file processing (think loading files from your pc). In my experience, 5% of all users want this (relevant) and quite badly, in fact
I might also want to run wechat there, though that could run into a variety of issues.
They used to offer a way to use it in the browser, too, but that's been shut down.
Blackberry tried it with Blackberry 10 and failed. IBM failed the same way with OS/2. If you make your OS compatible with a foreign platform, there is less incentive to write original software for it and, therefore, there is less reason to get your platform instead of the one you are compatible with.
And as an Android dev, I now have an incentive to optimize for Microsoft device form factors, which is a lot easier to do and maintain than making a whole port
And I don't see that there are too many developers who are now writing Windows desktop apps who will suddenly decide to rewrite for Android. Cos what apps are native? Stuff like CAD software, Unity, Photoshop, etc - stuff that has heavy complex UIs and wouldn't work well if at all in most Android contexts
That's the point. Over time, the volume of Windows-specific software should decrease because when you write for Android, you effectively target both platforms.
> who will suddenly decide to rewrite for Android.
That will be the case for a while, until there are Android devices with capabilities similar to a Windows computer. Apple neatly solved that with the M1-based iPads, as they are effectively more powerful than most Windows devices.
But this was highlighted in the video clearly targeted at consumers with great fanfare, so I don't know...