With respect, where is there any evidence to support the idea that this will ever happen?
Yahoo is making nice profits in a very messy economy.
You could take search completely out of the picture and Yahoo would still be in a position to make a profit. Everyone catch that? Yahoo isn't just search.
I know saying anything positive about Yahoo isn't popular on WW at the moment but someone has to do it :-)
Yahoo is in absolutely no apparent danger of going under. Their stock price is in bad shape but people seem to be conveniently failing to take into consideration that everyone's stock prices are down at the moment.
Maybe Yahoo will never get back to $30+/share but that won't mean they're not a viable company.
And Yahoo staying independent is good for search.
Lets be honest, what would have happened to Yahoo's share of the search market with MS running it? It would have declined far faster than it currently is.