In what way? They all just re-consolidated back into monopolies. I have one choice of telecom provider in my location: if I don’t like Xfinity, I get to eat shit. At least Ma Bell had to get the government’s permission to raise prices; frankly, I’d prefer having that back.
It's fairly straightforward to argue that the internet as we know it wouldn't have been possible without the Bell labs split up. There were dozens of large telecommunications companies that were enabled by the split, and those companies built much of the equipment used in the early internet.
Not to mention Unix.
Instead we ended up paying for dark fiber with companies having no incentive to use it.