Amazon, Google, Facebook and Apple will all be broken up by the government within the next 10 years (from this very day). We are just now beginning to realise the significant role these companies have in our lives and the data they have. If you look at them, they are conglomerates of old, and hold monopoly positions in a number of markets.
They also combine a wade array of businesses that in many cases shouldn't have anything to do with one another. Google has its search/ad business, why android as well? Facebook and instagram are separate platforms, and natural competitors...why should facebook own both? Apple is a bit odd, its basically iPhone and then everything else. Amazon is Retail and AWS, and there is no reason they need to be under the same roof.
All of these companies will go the way of Standard Oil and Bell Systems. The internet is fragmented already anyway - we are or will be completely locked out of places like china and russia, and regulators in other places like the EU or Brazil won't take kindy to american monopolists with access to so much data. The idea we will need a national champion in these tech industries will hold no water, these companies will have been forced out of most major foreign markets already.