MS has them all three too.
And since, as you say, the algorithm part is not the most difficult part, others may enter the playing field soon (we already have DDG and Kagi, for example, with Kagi now experimenting with LLMs too).
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