Lets just say you have ~$2 Trillion burning a hole in your pocket and buy google, take it private. At day one you could shut down the normal gmail service for basically everyone who don't pay for it, right? For most business accounts I'm guessing you need to wait for the next billing cycle, but that would be next month in most cases. For special accounts it might be longer but those would be a very small number.

Could anyone win a lawsuit against a serviceprovider for (completely within the terms of the contract) not wanting to provide a service anymore?