Can a Selfish Mining Strategy Evolve into a 51% Attack?

While selfish mining is primarily a revenue-maximizing strategy, if the selfish miner's hashrate increases to 51% or more, they gain the capability to execute a full 51% attack. The strategy itself is different, but the necessary control allows for the transition.

Once the 51% threshold is crossed, the miner can choose to not only maximize revenue but also to censor transactions or perform double-spends, moving beyond mere selfish behavior.