In sharp contrast to normal cabbies, who pick up the very first person hailing them without any discrimination, never refuse a destination, always have credit card machines that work, who completely don't expect you to pay them a dime beyond the regulated rate, are perfectly diligent in working with the disabled, and report every last dime that passes through their hands -- or, whey they fail to do these things, are prosecuted by the city with the exact level of vigor used in the current case against Uber. /s
Sometimes it sucks when people ignore the law. So does selective prosecution.
I think your problem is that you assume that because Uber might be, in some cases, be ignoring regulations that that means that Uber's behavior is wrong. The law usually not a guideline for ethical behavior. Specially in a country as bureaucratic as ours. The law quickly becomes something that protects incumbents and stifles innovation.
Sometimes it sucks when people ignore the law. So does selective prosecution.