In essence, yes, I'm saying this will remedy itself, based upon the nature of the market.  Retail is not an inherently monopolistic sort of market -- hence my statement, "Someone will build a better mousetrap."  The long-run concentration of power is dependent upon the nature of the market.  In (say) the operating systems market, the need to have a standard trumps prices, since businesses have to be able to communicate properly.  Ergo, Microsoft can maintain its near-monopoly power.

(I submit to you that it is a mistake, on Microsoft's part, to engage Apple in the office applications market, because it makes the problem of moving to the Mac operating system less severe -- thus allowing the possibility of the "pros" outweighing the "cons".  But Bill Gates has covered his ass, here, in that he has invested a great deal in Apple.)

On the other hand, there is no such need in retail.  If you can produce better clothes (or prescriptions, or tools, or whatever) at lower prices -- and someone will -- you can beat Wal-Mart.  True, it will take an enormous level of investment and one hell of a commitment, but it can, and will, be done.  I'll place a gentlemen's bet with you that, ten or twenty years from now, Wal-Mart will not dominate the market.

Be nice to America. Or we'll bring democracy to your country.