Please don't spread information that is factually incorrect, especially not if it concerns a small company trying to compete with a much larger one.
"In fact, DuckDuckGo gets its results from over four hundred sources. These include hundreds of vertical sources delivering niche Instant Answers, DuckDuckBot (our crawler) and crowd-sourced sites (like Wikipedia, stored in our answer indexes). We also of course have more traditional links in the search results, which we primarily source from Yahoo!, and in some regions and scenarios, Yandex and Bing.
"In fact, DuckDuckGo gets its results from over four hundred sources. These include hundreds of vertical sources delivering niche Instant Answers, DuckDuckBot (our crawler) and crowd-sourced sites (like Wikipedia, stored in our answer indexes). We also of course have more traditional links in the search results, which we primarily source from Yahoo!, and in some regions and scenarios, Yandex and Bing.
From: https://duck.co/help/results/sources