I don't disagree with your point. Although, if you think it is limited exclusively to ESPN - or even WBB - or even only sports - you don't watch as much live stuff as I do. They do it on NFL football, WBB on Fox sports, and yes, even on the channel we watched the Presidential Inauguration on.
I don't know where you think ESPN is going - I agree someday they may go somewhere, but for now, they are broadcasting - themselves and their affiliates - up to 10 WBB or more on some days. And they have a huge football "plate", as well. Yes, like every TV based company they are struggling with folks cutting the cord - but of course they are expanding their on-line presence as well.
My comment related strictly to someone's remark about how much more you can see in person, as it didn't apply in this case. Actually, a lot of announcers don't seem to pay attention when they are there in person - or I wouldn't know what the call was (out-of-bounds vs. foul vs. held ball) while they are babbling on the TV. Um, watch the ref for the signal.