I do understand the problems with monopolies. But Canon is not a monopoly. There are many, if not dozens, of other camera manufacturers to choose from, and they are competing very aggressively against each other. But I don't know what the law actually is in the USA or in general (hence why I inquire here about it). I'd also like to say that I do enjoy having choices, and will choose what is best for me as others will do. I'd just like things to be fair to companies, as well as to their buyers. And "fair" is a very relative term to different people.Monopolies are generally considered as being bad for the consumer and most countries have set up legislation to prevent their worst effects. Monopolies are not illegal in the USA but the Sherman Anti-Trust act prevents them from abusing their power. We in the UK have a Competition and Markets Authority, a successor to the Monopolies Commission, to control monopolies and make sure there is competition. I think, and am willing to be corrected on this, it is illegal to prevent 3rd parties from making batteries, lenses etc to work with your products but you can make it difficult.