Comcast has been transparent about the number of users who are actually paying members vs given away for having Comcast and more. Out of the 42 million people, 1/3 are MAU (Monthly Active Users actually paying for the service) which exactly 1/3 of Hulu's as well. Additionally, Peacock suffered more from the introduction of COVID then every other service because all the programming to launch Peacock production was stopped due to COVID as well as their big Olympic broadcasting of events through peacock delayed as well.
Comcast is building up their own ecostructure in a way that is different than Disney/Warner with Telemundo Global Studios, Sky Studios, and NBCInternational Studios. Telemundo Global studios is already the leader in creating the most Spanish language productions for streaming services since 2011. Sky Studios is about to spend 20 billion a year on producing content for Sky and outside distributors focusing on UK, and NBCInternational Studios is gaining in traction due to the number of series they have sold to outside distributors around the world.
You made the wrong assumptions as to why Comcast buys certain companies. Comcast wanting to be Fox was less about content and more about Star's infrastructure and penetration into the SE Asian Market which is one of NBCUniversal weakest areas outside of Dreamworks animation.
Additionally you are wrong about Comcast not being able to buy Warner/Discovery. They can not fully own the company nor would they want to fully own it but the suggesting is Comcast becoming a partner in ownership while retaining full control over NBCUniversal and what currently was being suggested and being suggested by Malone and would easily get around antitrust laws.
Apple doesn't want Sony nor does Sony want to sell.
Lastly Comcast doesn't want Lionsgate, the same way they and Apple passed on MGM due to the fact it was over worth 6 billion. Lionsgate lacks the talent and library to jusitfy the level of valuation their shareholders would want.