There's also the big cable MSO that is the combined RCN, Wave, Grande (now being rebranded as Astound), also owned/run by some wall street finance types.
And Lumen... but no, the list is longer, altice, windstream, wow, brightspeed, astound... the trend is definitely towards consolidation the past five years now, Nitel buys Hypercore, Comcast buys Nitel, Zayo and CCF, Comcast and and massergy, sprint wireline to tmo... etc.
So we're mostly down to AT&T, Verizon, Comcast, and Charter.
Verizon previously tried to merge with Charter back in 2017, but that didn't work out.[1]
[1] https://www.wsj.com/articles/verizon-is-exploring-combinatio...