If I do something bad, like collude to depress the wages of my workers, the existence of alternatives to the service I provide are not exculpatory. Legally, if

If I do something bad, like collude to depress the wages of my workers, the existence of alternatives to the service I provide are not exculpatory. Legally, if those bad things are anti-competitive in nature, one of the potential remedies is the forced breakup of the company. If you don't think these companies are doing anything bad, that's one thing, and the existence of competitors is certainly one piece of evidence towards that conclusion. But it isn't determinative. You can engage in many anti-competitive strategies that don't preclude 100% market share.