You're looking at this as a static _binary_ model, while actually, the 51% attack is heavily dynamic. The profitability of the attack heavily depends on factors

You're looking at this as a static _binary_ model, while actually, the 51% attack is heavily dynamic. The profitability of the attack heavily depends on factors that are absolutely dynamic and not publicly available: - The exchange/betting website not catching onto your scheme - The volume of the coin being enough to mass sell it and not majorly affect the price - How fast the community can act in unison against you