I mean, worst case for Hasbro itself is that those guys who wanted to spin out WotC and turbo boost it take over. Which will probaby mean TSR substance-fueled levels of D&D product.D&D is a weird brand. It has enormous name recognition, far more than, say, Magic the Gathering, which despite much higher sales remains very much a niche hobby (ask most folks about D&D and they'll have an opinion or at least know vaguely what it is, ask them about MtG and you will likely get a blank stare). I can totally see why Hasbro think that it is under-monetized, especially when they see the sales for BG3.
The good news is I don't think D&D is in any danger, regardless of what happens to Hasbro. It remains a strong and coveted brand, and even if Hasbro went under, WotC/D&D would be immediately snatched up by someone else.