Pre-Reagan, sure. Since then, none. There's zero interest in breaking up monopolies in the US from both Democrats and Republicans.

Hell, today's AT&T has more market share than Bell Systems did before it was split up.

EU, on the other hand, appears to be slowly progressing towards the goal of breaking up tech monopolies. Leaked plans would shake up the tech quite a bit: https://www.eff.org/deeplinks/2020/10/eu-vs-big-tech-leaked-...

Nice re-writing of history. Microsoft anti-trust was post Reagan. AT7T now is about 34% market share. The rest is between Verizon, Sprint etc. Not the same as what Bell had.

Microsoft has been broken up?