As globalization advances, many traditional festivals in various places have gradually become commercialized, while others insist that these festivals should preserve their original cultural significance. When a country becomes increasingly reliant on tourism to drive economic growth, is it inevitable that the core values of traditional festivals will be diminished? Please articulate your stance and explain to what extent commercialization poses a greater threat to cultural heritage than the opportunities it brings. Provide specific reasons and examples to support your viewpoint.