Disney owns both ABC and ESPN. So the three companies are essentially different sides of the same entity.
While Disney is in no danger of folding, its stock has languished for some time, and is now below what it was 9 years ago...while the S&P index as a whole is roughly 2.25x what it was at that time. That's what cost Bob Chapek (who was, incidentally, Bob Iger's handpicked successor) his job as CEO.
Since Bob Iger took over for a second run as Disney's CEO, he's been on a tear to improve profitability. All the cuts in on-air personalities at ESPN were just one part of that. Increasing revenue with hardball negotiations as contracts with various deliverers of content come up for renewal is another. Disney getting much quieter on the political front is yet another.
Spectrum is getting all the attention now, simply because it's the first major one up for renewal since Iger's second stint as CEO started in November of last year. All the others, whether traditional cable, satellite, or streaming, will have their turn in the barrel.
This is the beginning of a total remake not just of sports programming, but across all content of all descriptions, and will end with consumers having to make some hard choices.