Cab companies could have provided text service. Perhaps they will. Uber model was come in..undercut cab companies and provide a more efficient ride ordering system. Once they have market share, slowly lower rates that uber drivers are paid.
So, more choices for you and others. Fewer living wages for transportation drivers. I doubt Uber is sustainable over long term for social reasons. I expect eventually uber drivers may be reclassified as employees due to tax code changes that may happen. It is a bit different than a trucking broker, where the truckers are safety regulated etc.