Google being big search engine is not as big problem as their use of their money and position to leverage into other areas. By all means allow Google to be a dominant search engine, but force them to sell stuff that is not their core business, like
Android - it came out in the Oracle case that Android has only made Google about $24 billion in profit from the time of its inception until the beginning of the trial. They have given Apple more money to be the default search engine on iOS than they have made on Android.
Gmail - mail hosts are a dime a dozen. It’s a feature not a product.
Google drive - again a feature not a product. DropBox has lost money since it’s inception and MS gives away 6TB of storage with Office365 ($100/year)
GSuite - not exactly a “monopoly” it’s a distant second to Microsoft.
Office software with the limited capabilities of GSuite is a commodity. Apple gives iWorks away.
Apple is in every single segment that Google is in and Microsoft is in most of them. Should we say that any company that has a product in one category shouldn’t be allowed to branch out?
Should Apple have been forced to keep selling iPods knowing that the phone would eventually kill their business? Should Microsoft and Google not been allowed to offer cloud services?
YouTube, Gmail, Drive, Android, G Suite ...
Facebook should be forced to sell Instagram.