Microsoft software is bad enough as it is. Now imagine what will happen to it when potentially 60,000 people leave the company. Most larger enterprise customers will be generally okay, but all of those small to medium sized non-profits, charities, etc that use Microsoft products because they don't have a proper IT department and don't know any better will start to feel the pain of even worse software.
Now, more than ever, these smaller places need open source and Linux/BSD alternatives.