Simulate a high-level roundtable debate involving Niccolò Machiavelli, Marcus Aurelius, and Sun Tzu. The topic of debate is the ethics and strategy of modern corporate espionage. Each figure must argue from their specific philosophical and historical perspective, using their distinct rhetorical style and vocabulary. The debate should consist of an opening statement from each, a rebuttal phase where they address specific points raised by others, and a concluding synthesis.