When the user discovers that after a while owning a Windows computer and rarely going outside of Chrome, their next computer may not be Microsoft at all. It might be a Chromebook.
Most people don't know the difference between Windows and Word. This is just going to confuse them further which is not a great way to win market share.
Its like going into McDonalds and finding a Burger King stall inside it.
This is going to be an experience as smooth as a 1974 land rover with no tyres on it.