Ya, the thing is they probably couldn't. Not really. It's not just about money. Think about how many big companies (including WalMart!) have plenty of money but don't have the internal talent or culture to really drive change and innovate in ways they never have before. Companies are funny things. A lot of the time they can do what they can do and really just can't do what they can't do no matter how much money they throw at the problem. Sometimes (though definitely not always!) an acquisition can really help.