People are only concerned with ESPN because it is a machine and has a high subscriber base.
The reality is that most people who have ESPN are absolutely sick of it and all of their "personalities". From Skip Bayless, to Bill Simmons, to Stephen A. Smith, Chris Broussard, etc., people are tired of ESPN.
All people want right now is another option.
I watched the NFL Draft on the NFL Network as opposed to ESPN and their coverage blew ESPN out of the water. Their analysts are much more knowledgable in every aspect (Mike Mayock for example).
People were begging for NBATV to cover the NBA Draft because again, their analysts are better.
Fox Sports 1 will have a show to rival SportsCenter. They just need the right hosts.
Their college announcers are regarded as some of the best.
FS1 just needs to be the anti-ESPN and they'll be fine.
Every analyst you just named is primarily responsible for the NBA. So you are saying people are sick and tired of the announcers that cover one part of one sport.
Fox Sports can try to rival with ESPN, but I just don't see them succeeding, at least not any time soon. ESPN just covers way too many different kinds of sports, and is way too big of a name for anyone to take down any time soon.