You're right that big companies should only be broken up if it would benefit consumers. The point I'd raise is first that you may be unaware of better alternatives because of anticompetitive behaviour by Google and second by Google's very nature they could limit the discoverability of competitors.
(I have no idea whether better competitors exist or whether Google could, let alone does, hide them.)
Antitrust cases are hard to generalize I believe. If an airline lowers prices on a route following the entrance of a (smaller) competitor, it's hard to know whether that is or should be illegal without knowing a whole lot of specifics.
> you may be unaware of better alternatives because of anticompetitive behaviour by Google
google provides all of the best services in each of its major consumer categories unless you value privacy, except when there's a major competitor. there's no hidden gem better than youtube that would scale as well.
(I have no idea whether better competitors exist or whether Google could, let alone does, hide them.)
Antitrust cases are hard to generalize I believe. If an airline lowers prices on a route following the entrance of a (smaller) competitor, it's hard to know whether that is or should be illegal without knowing a whole lot of specifics.