I kind of predicted this one since they didn’t seem to be interested in doing a Pike series:
I don't think it's that they're not interested in doing a Pike series per se, BUT it's pretty clear they were probably pleasantly surprised at fans response to Anson Mount as "Pike" and Ethan Peck as "Spock" (and it could have gone the other way VERY easily.)
I think it's more that they already have a lot on the plate and in the pipe - and make no mistake that they probably see the fact they got Michelle Yeoh to agree to headline a series will expand Star trek fandom globally, and expose it to people who wouldn't look at a Star Trek series otherwise. So yeah, it's not like they're thinking a "Pike" project would be better (business wise) then Patrick Stewart reprising Jean Luc Picard (which was really fast-tracked for multiple reasons, including Mr. Stewart's age); or a new an different Star trek series headlined by a well known, worldwide action film star who has a large following internationally.
I also don't think any of the above kills the chance for a "Pike/Spock" related project (beyond the 'Short Trek' we now know about - which in itself was probably concepted and executed BECAUSE of Star Trek fan response to "Pike" and "Spock" as portrayed by Anson Mount and Ethan Peck. CBS is already spending (and risking) a lot of money with what's in the pipe moving toward completion; and I don't fault them for waiting a bit to see how the new offerings are received before committing to even more risk and financial expenditure.
TNG was on the air for 4 seasons before they even thought of doing another concurrent Star Trek series. Now, granted the situation for streaming (with less episodes per season) is very different, but again CBS went big in getting both Michelle Yeoh to agree to headline a series; and also to get Patrick Stewart to reprise his iconic Star trek role <----- And I doubt either one came cheap, or that CBS will suddenly skimp on production values here; so yeah, they don't have a lot of cash that isn't already committed to do a fourth Live Action series as yet.
I still think it's possible they could decide to do something more with Mount's "Pike" and Peck's "Spock" down the line, including it being the fourth streaming live action CBSAA Star Trek series at some point; but, time will tell.
