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Buying up companies like that is known in Wall Street parlance as a "roll-up". It is also known by most persons knowledgeable about such things as generally a bad idea.
Think of Apple Inc, yes they buy tiny companies to gain access to patents and personnel, on occasion, but on balance stay away from anything one might consider roll-up, i.e. buying one of their many foundering competitors like Hewlett Packard stupidly has done, many times, for example.
The ostensible reasons for doing a roll up include generating a larger revenue / per share number, potentially eliminating major competition, greater leverage with retailers etc. None of this is mentioned but rather the term "operational efficiencies" is thrown around a lot.
Moves like roll-ups are sold to management by Wall Street consultants who profit greatly on such deals, think financing, the key ingredient to all leveraged buyouts and mergers. And they couldn't care less about the ultimate results of their financial engineering. Managements, like Maytag in this case, can generate short term excitement which helps sell securities (stocks, bonds etc.) to shore up the failing company until their plan works, or until the CEO and other execs jump ship with their large bonuses and golden parachutes when they too are rolled up...if/when the mergers fail as they so often do.
But as you can see those that decide on this course are covered in any event.
Berkshire Hathaway, a frequent and very visible buyer of major companies, is another matter entirely. First they are a conglomerate, and second their management rarely if ever does something just to please the stock market. [this post was last edited: 5/3/2016-19:14]