Allow me to be cynical for a moment, for the sake of debate: if your business is profitable, why sell it for what Im assuming is going to be low multiple to a non-strategic buyer like Tiny?
Also maybe you dint see the future is as bright as the buyer. Lots of reasons to make a move.
You would, perhaps, sell to a PE firm like Tiny when you believe you've exhausted growth.
That, or the traditional 3 D's: death, debt, divorce.