Even that won't change much. There is no way Google can be out-googled by other search engines because of its market dominance: more traffic means more clicks, more clicks mean better search results, better search results will drive more traffic.

I try bing and DDG for a week or so every 6 months. I always switch back to google eventually because the results are so much better.

Google can only be disrupted if something new is invented, something different than search but delivering way better results. I have no clue what that might be. But I hope someone is working on it.