A key part of why Uber failed in Germany is also that our taxi market is massively and properly regulated which means the selling points of Uber being a better taxi service simply were irrelevant here - our taxis come when you order them, the drivers are competent and will take you on the most efficient way possible to your destination and the pricing is consistent no matter if it's day or night, if it's high demand time thanks to e.g. a trade fair or not, or if you're drunk or sober. The only thing that sucks is that many do not take cards, but that's a cultural thing - Germans love their cash.