Last week, Disney, Fox, and Warner Bros. Discovery put an official price tag on Venu Sports, the live TV streaming service they intend to launch this fall. Venu Sports will cost $43 per month as an introductory promo rate—it’s unclear what the price will be after that—and is notable for excluding general entertainment and news channels that don’t carry live sports. There are many ways to think about whether Venu Sports will be worth it at that price, but the one I keep coming back to is a hypothetical conversation between sports fans about what, exactly, the service has to offer. Please indulg…