* > I've been trying to start a business lately, and as many people do, have chosen to rely on Google's suite of products.*
Just a reminder, most businesses fail - so doing what many people do is not necessarily the best thing to do.
Having said that, it's rather foolish to have your business depend on Google. They have repeatedly demonstrated they're not good business partners and the main thrust of their business isn't in providing products and services for businesses. They don't support their services, they'll drop them at a moment's notice without any regard to the impacts to your business, and there's no way to get ahold of a human being when things inevitably go sour. Why do you want to partner with someone like that?
I bash on the technical merits of Windows all day long but one thing Microsoft has done well over its nearly 50 year history is serving the needs of business. It's in their DNA. Office 365 is a very capable, and supported, platform. Nice thing is you can run it on a Mac too!