The breakup resulted in a massive consumer bonanza, as long-distance communications became too cheap to meter. The regional monopolies it failed to address, on the other hand, held back the deployment regional broadband for decades -- and have since used the outsize profits from their lousy monopoly business to eat up many players in competitive markets.
But the imperfection of the breakup isn't an argument for leaving monopolies alone. It's hard to believe that companies like Google would even exist today if AT&T had held their monopoly. What new "Googles" are we missing -- and don't even know we're missing -- because Google subsidized things like Android and YouTube?
Then DuckDuckGo would have access to rebrand googles search but keep its privacy benefits, while other providers could compete on other search value add.
Have you heard of startpage.com? It's literally that. Essentially it's to Google what DDG is to Bing.
The technical complexity difference between power distribution and internet search is so large that you can't compare the two.
Motivation to keep improving is vital in search. It's a decades old arms race between quality results and black hat algo gaming. And it plays out on a dataset that's always growing, and that growth is always accelerating. If iteration slows down even a little, black hat wins and everyone else loses.
Your suggestion would effectively kill Google, which is maybe the goal, but unless it applied only to Google it would kill the searchability of the internet along with them.
Remember Altavista? It would look like that.
Which is not to say there aren't regulatory answers to Google's dominance. Forcing a firewall between their interests (i.e. search and advertising) would be a start.