Mastering what works and what doesn’t won’t make you a monopoly. If anything it helps them realize why they don’t want to be a monopoly because that makes life suck.
Doesn’t matter what bookstores think. The facts are the facts, and the facts are judges generally require a company to have at least 80% of the market share to be a monopoly, and Amazon only has 41% of the book market, 65% of the online book market. Not a monopoly.
Sears house wouldn’t work in today’s market. What everybody ignores about those is that they were all assembly require. Who has the time, much less the skills, to do that anymore? It really wasn’t that big a seller for Sears, only sold 70,000 units over the course of the 32 years they were on the market. It’s value was really in the symbol more than the item, it really helped push the building materials section of the catalog.