"The “WWE Network” branding will remain present on Peacock. WWE Network will be available on both Peacock’s premium ($4.99 per month) and ad-free ($9.99) plans, so current subscribers of the wrestling service, which costs $9.99 monthly, will actually be saving money if they opt for the $4.99 option."
My take is that Peacock is betting that all of the current subscribers will stay(why wouldn't they, they can pay the same price and get all of the non WWE stuff as well) and also hoping way more wrestling fans (new subscribers) will now pay the $4.99 premium plan to get WWE and peacock programming.
WWE will move its streaming service to Peacock in the US
You’ll actually end up saving money if you have Peacock’s $5-per-month plan.www.theverge.com
Yeah, all true. I notice that WWE's subscriber count was creeping down last year. (Were they not doing live matches due to COVID? I have no idea as I don't care about wrestling at all.) They had 2.1 million subs at the end of Q1, down to 1.69 m for Q2, down to 1.55 m for Q3.