1. consumes monopoly priced content (ESPN pays $1.9 billion/year for "Monday Night Football") with waning appeal.
2. produces content only to obsolete content providers (cable/satellite t.v. providers), appears contractually bound to remain this way.
3. (imo) has a dubious content model in the 21st century. The ESPN content I've seen has been standard corporate-cable lowest common denominator garbage that builds no trust with the audience.
I'd be surprised they weren't dying more quickly, but it has taken me years at a time to get my older relatives to cancel cable subscription they never use (not just sort of never, literally never).