This is also just a consequence of globalization. A small company cannot compete globally, which means less power for the US government abroad. So it's not in the interest of the US government to break up Apple or Google or Microsoft. Look at how both the US and China can just bully Europe.
Agreed, and that is why big countries should also be broken up. No more countries over 50m citizens. Many people in Europe don’t want the EU, but there’s really no alternative when competing with large countries like China and US.