I don't see how this helps them either. They have to buy it is all. I don't understand the valuation either. NBC will pull their content and it will just be all Disney owned content. If they were not obligated to buy this I doubt they would.
By all accounts Peacock is floundering and the industry is poised to start cross-licensing all their content again. Very few companies have the content library to pull off a first-party-only streaming service. Even Disney is struggling with this lately.