I can't get over the confident dismissal of science by hand-waving about imperfect modelling. But what I said has nothing to do with that, and is more true to the real world than an idealized perfect competition model. Pathologizing normal trading behavior like this is more the result laymen and authorities misinterpreting bad economic modelling. So I recommend you take some of your own medicine and look at the mirror. Maybe a trade affecting the market isn't so suspicious as you make it out to be, because the perfect competition model you're using to make accusations of monopoly simply doesn't make sense. Again, if there is something wrong with affecting the market, then you or I are just as liable for our consciously self-interested behavior of choosing higher-quality, lower-priced products.