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ReCaptcha was created by Luis von Ahn, and a team at Carnegie Mellon University. Initially designed as a free security service to help websites differentiate between humans and computers. ReCaptcha also had a motive to make reading historical books easier for computers to read and understand.

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In an effort to boost its own digitization efforts, Google acquired ReCaptcha in 2009. This acquisition was a win-win for both parties, enabling Google to enhance its Google Books project by using millions of digitized texts that were otherwise difficult to process. ReCaptcha's technology became a key player in the digitization of the world's knowledge, demonstrating the powerful combination of security technology and digital archiving.

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Duolingo was founded by Luis von Ahn and Severin Hacker, with a vision to provide free language education to anyone, anywhere. This was a new market created by having at your own pace language education. Duolingo became so popular because many people enjoyed being able to learn multiple languages on their own time, all for no cost.

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ReCaptcha continued to evolve under Google's ownership, introducing innovations such as the 'No CAPTCHA reCAPTCHA' in 2014, which allowed users to verify they are human with a single click. This advancement improved user experience by making the websites they were accessing more user friendly and that improved click off rates on many websites

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After a year in private beta, Duolingo launched to the public in 2012. Its arrival marked a huge shift in language learning, offering a freely accessible platform with courses in numerous languages. Its unique business model, providing free education while subtly using language learning tasks to translate the web, showcased the potential for technology to disrupt traditional education models economically and effectively.

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Demonstrating the success of its business model and the demand for accessible education, Duolingo was valued at $8.8 billion in 2024. This milestone emphasized the economic potential of combining technology with education. Duolingo's rise to a multi-billion dollar company serves as an inspiration for future educational innovations that are both beneficial economically and socially