First of all, calling the US a third world country us a but much. It has its problems but so does everywhere else.
In the US, I've never had trouble calling to get a taxi. Radio dispatched taxis have been available as long as I can remember everywhere I've lived. Uber is somewhat more convenient because GPS gives my exact location and it lets the driver contact me easily. It's not something crazy innovation but it is easier.
I'm not sure what you're talking about with electricity. The grid is generally reliable though it could stand to be put underground in many areas.
We are behind in banking to be sure but a lot of that has to do with demand and consumer protection laws. No one is screaming for a more secure card when fraud liability is limited to $50 by law and is $0 in practice at most banks.
Healthcare could use an overhaul to be sure. Outcomes and costs are not in line with where they should be. That isn't to say that it us terrible, just that the system needs improvement.
Most of these companies aren't truing to overcome bad. They are trying to overcome good enough.