Responsible blitzscaling matters because successful blitzscalers often reach a point where they are more than just a business; they actually affect the fabric of the society in which they operate. Social media like Facebook and Twitter have changed how we consume information and how we communicate. Marketplaces like Alibaba and eBay provide economic opportunity—some dedicated sellers even rely on them for their livelihoods. Sharing economy services like Airbnb can bring more tourism and diversity into the cities in which they operate. And Amazon is changing the entire retail industry, which affects everyone. As Spider-Man teaches us, with great power comes great responsibility.