Not commenting on Google, but the problem with monopolies is you don't know what other and potentially better products might exist now if there was fair competition. Companies aren't going to fund a competing product when they know they're against a powerful monopoly.
"But the company being accused of having a monopoly has the best product and I like it" was said about Windows too when they were locking out competition. It's short-sighted.
kieskeurig.nl/be, beslist.nl, kelkoo; all of which are relatively popular in just the Netherlands. Those are the few that survived by focusing on tiny niches; in this case a tiny geographic and language-demography.
https://market.yandex.ru (only in Russian). Exists for over 10 years. Was my to go place to shop for electronics due to extensive filtering. It actually still is even after moving to US: I just pick the device there, then order on BestBuy/Amazon/NewEgg.
"But the company being accused of having a monopoly has the best product and I like it" was said about Windows too when they were locking out competition. It's short-sighted.