If they continue chugging along, they're most likely going to get eaten alive by single-purpose companies who have the capability to offer a more refined product, and iterate at a quicker pace. It would be more valuable to investors if Yahoo split into product-specific components, a la HP. The sum of Yahoo's components will be more valuable than the whole, anyways.
Yahoo's been throwing shit on the wall for a long time, and nothing's been sticking. It's no wonder investors are starting to lose their patience.
Older people care about convenience, rather than the "best" product (I know this as an old person). If Yahoo had a decent breadth of product offerings, and if they marketed it correctly, they could keep most of their customers in their ecosystem. It won't work with kids that are used to 5 different chat clients at the same time, but for the people that don't care as much about flashiness and care more about integratedness and convenience, they could definitely win the way against single apps.
Yahoo's been throwing shit on the wall for a long time, and nothing's been sticking. It's no wonder investors are starting to lose their patience.