In The Register, Tim Worstall points out that most mergers lose money, but that they’re good for the economy anyway:
The final one of the four is the vital part that takeovers play in the clean up of the economy’s failures. Take a company that goes bust. The whole point of bankruptcy proceedings is to make sure that its assets aren’t then left, orphaned, or chained to an unpayable debt. The idea is to get them off into someone else’s hands where they might be put to good use. This is true of contracts, or the workforce, of the land and any other asset. It might be that the machinery is worth most as scrap. Or the factory is worth most as a supermarket. Or it could be that the OS coders and their desks would be best put to writing games: but under different management.
And it’s this last part of the whole system that our economists think is the most important. When failure happens, the vital thing is to clean up the mess and quickly. Don’t leave potentially useful assets orphaned but auction them off and get them working again. The price that is realised doesn’t matter very much at all: from the view of the entire economy, getting people and assets back to work pronto is the vital part. So important is this that we’re urged to overlook all of the above problems with takeovers and mergers to allow this part of it to function as efficiently as possible.
Yes, most takeovers lose money for the shareholders of the company doing the buying. This is often because the interests of the management diverge from those of those owners. Similarly, many companies are kept running longer than they should be for those selfish management reasons. But we put up with all of that (although try to constrain it) so that the scavenging upon the assets of the bankrupt can be as efficient as possible. For this is the very heart of the success of capitalism: Not how the successful make profits, but how the system deals quickly and cleanly with failure.