But doesn't that mean the basis for the argument is heavily in how you define the market? How people define the market feels entirely arbitrary to me -- suppor

But doesn't that mean the basis for the argument is heavily in how you define the market? How people define the market feels entirely arbitrary to me -- supporters of the antitrust investigation scope it to "iOS", while opponents scope it to "smartphones". Both are valid, but it's our personal position that drives how we define market. That seems backwards.