If this means Microsoft's Office Apps for Android (Word, PowerPoint, Excel, Outlook) come over to Chrome OS and Google manages to integrate them in a nice fashion - Microsoft has one more headache to deal with.
That aside, this will seriously increase the appeal of Chromebooks - who doesn't want a simple, secure platform that can run all the bazillion Android apps? Google just needs to pay some more attention to Chrome OS desktop interface - it is shitty frankly.
Currently yes, because so few people are running them on a desktop. There's nothing preventing that from changing other than momentum though, Android is set up to handle varying form factors already, so if someone wanted to create an app which scales from mobile through tablet to desktop they can do so.
Now that there's a supported way to get Android apps running on people's desktops I could see this becoming more of a thing, especially for things like photo and document editing.
That aside, this will seriously increase the appeal of Chromebooks - who doesn't want a simple, secure platform that can run all the bazillion Android apps? Google just needs to pay some more attention to Chrome OS desktop interface - it is shitty frankly.