MS has the money. Data is by far and away the hardest part, and DDG's own privacy policies etc will hurt it here, alas.
Personally, I think it is Google's race to win. But they have to DO it. If I start getting better results off DDG or Bing, I'll switch. I'm fickle, and own no loyality to Google.
I just want my StackExchange answers faster, before Google Coder, and Co-Pilot replace me. /s