E.U's Qwant search engine needs to Embrace, & Extend before trying to Extinguish
The only way to really break up an entrenched incumbent like Google is not to try and replace it right away but to first embrace, extend, and only then slowly try and extinguish it. Essentially two relatively simple steps may be all that is required to accomplish this.
1) On the desktop, all search queries in browsers should be required to present double framed results page with left frame for Google, and right frame for say E.U.’s own Qwant engine. If users don’t see what they like in the left frame, they click on an answer in the right frame.
2) On smartphones require search results to be swipable so that user can swipe the Google results page if they don’t see what they want to have the same query run thru Qwant.
This allows enough traffic to be built up through Qwant to raise money thru ad revenues, perhaps by using differential privacy to protect user identity as Apple does. Qwant might then have a chance to improve and catch up to Google in search