Regulation can both help make people safer and also get in the way of innovation. A more realistic example: Regulations say cars are required to have steering

Regulation can both help make people safer and also get in the way of innovation. A more realistic example: Regulations say cars are required to have steering wheels. They also say cars are expected to be under the control of a driver at all times. Good and all if you expect to have human drivers. But it increases the cost of self-driving cars. And humans are terrible at mode-switching right before an emergency (we know this from studies on airplanes, as well as from studies on self-driving cars). The two ways of solving this: (1) develop a self-driving car that doesn't need a steering wheel (ala trains under positive train control) or (2) restrict operation of self-driving cars to people who are highly trained and regularly operate cars in manual mode (ala the airplane industry). Alphabet/Waymo/Google can afford the army of lawyers and lobbyists required to make this happen. All the other start-ups in this space had to get acquired by an incumbent (GM or Uber) or restrict their domain to something with less regulation (e.g. private land -- golf courses; university campuses; the Las Vegas Strip).