Will Google be worried about this development?
Honestly, probably not. By default, Microsoft Edge pushes you to Microsoft’s own services – like Bing – however, these can all be changed in the settings to make it performance almost exactly like Chrome. The increase in popularity means the two most successful desktop browsers right now as Chromium-based, consolidating its grip on the web.
As such, website developers might be less inclined to build sites which are browser-agnositic rather than simply using the tools available to optimise for Google’s engine.
That will hurt those who’d rather use Firefox, Safari or other alternatives.