Traffic prioritization is an important issue that does hurt businesses and users to the benefit of telecoms and ISPs. It is better known as the "net neutrality" issue. https://www.eff.org/issues/net-neutrality

To your larger point, the disgusting part is the behavior of the regulators, who should not succumb to the lobbyists and campaign donations of the livery industry. However, it's also absolutely wrong to attempt to influence government for personal gain. We all have a moral duty to do what's good for everyone including ourselves. Taxi unions need to recognize that protecting incompetent systems to enrich their members at the expense of everyone else, by using government as a weapon, harms every user of public transportation and several businesses and in the long run sets the drivers up for an unnecessary catastrophic collapse of the taxi system when it becomes completely unbearable by the public.