You make it out as if this is only done by Google. The same company that tries everything it can to make you use Edge on Windows also tries to make you switch to Edge on their site. Google is perfectly entitled to do what they want on their site, Microsoft however takes it to a whole new level - which is par for the course with Microsoft.
"Experience AI-powered browsing with the new Bing built-in. Get comprehensive answers and summarized information side-by-side in Microsoft Edge"