Exactly. And if investors have already priced in the high growth potential, sometimes even if the "good part" grows a lot it can be that it doesn't grow enough

Exactly. And if investors have already priced in the high growth potential, sometimes even if the "good part" grows a lot it can be that it doesn't grow enough to justify the valuation. Fair to add that this doesn't refute the structural logic of seperating the parts - if your business has two halves that are that different, a split can make total sense.