I don't know about you, but 4 out of 5 times, when I research my ddg query, which did not produce a single relevant result on the first page, on Google, I get a good result as #1... Maybe I search google optimized.
Still though: This is not evidence for Google's search quality. I, too, feel, like the results got worse over the last years.
Also: Afaik, DDG uses bing under the hood, not what I would call "search startup" in the sense of revolutionizing search quality.