Fox cannot afford the 6 years of losses ( compared to other services) with a new streaming service, one they will not have enough content anyways.
FOX isn't starting a streaming service from scratch. They already have a streaming service, they just don't charge for it, it's included with every TV/satellite/streaming contract. All they need to do is create a front-end and billing to handle the subscriptions. They can pay someone they already work with or build it themselves. They also don't need content, they have the FOX shows and the NFL and College football.
If Peacock and Paramount can exist, FOX can have the same model. Yes FOX has overpaid for MLB but the contract is signed, they will only continue to lose more money if they don't offer something in the $5-10 a month range that gets you FOX, FS1, FS2, BigTen, and their News channels. That would be a better offering than NBC has and probably better than CBS for football season.
Bundling is good for customers that want everything. For customers that don't want ESPN, their bill would drop $10-15 (whatever they charge) immediately. For customers who want it, here's a $30/m increase. At that point, just bundle yourself for cheaper with Disney/ESPN/Hulu, NBC, CBS, FOX. You could probably even add Netflix in for cheaper.i'd love to see this happen if only so Fubo can explain to its customers why their bills went up so quickly. There's no way Fubo is paying more than $43 for the Venu content, so if they want to pay the higher price for the sake of competitive parity, have at it.