“Science of investing.” Warren Buffett is rich because he bought companies and removed redundancies / restructured management, therefore making companies more profitable at the cost of decreased diversity of ownership of businesses. It’s a similar tack as globalism, where “stuff” gets slightly cheaper while jobs are shipped away.
If he did restructure the companies he bought, he would definitely not be alone in that. I'd always heard (though I haven't looked it up) that he tried not to fiddle with the management of companies, since good management was one of the reasons he'd bought them. In any case, no other investor who sweeps out existing management and removes redundancy is the most successful investor in history, so Buffett must at least be doing something else.
There are two well researched biographies of Buffett, The Making of an American Capitalist and The Snowball. Your characterization of his investments doesn’t match the narrative in either book.
