Let's say you've got five projects on the go right now. Maybe one of them hit it big enough to justify starting a company to wrap it in, so you run the other 4 under that umbrella.
Now project #3 hits it big, someone wants to buy, and you want to sell... Get ready for months of trying to detangle your various business assets, server accounts, etc. in attempt to legally and properly give them the bits they've bought.
