The rest of the world, not so much.
All that's really happened is that Uber side stepped some of your shitty laws. The efficiency gains, etc is all bullshit, not much has changed here in the UK apart from now you can use an app rather than a phone call. They turn up a minute or two quicker, wow. Uber are subsidising our rides a bit at the moment so it's like 20% cheaper for now. I hear prices go up after a year or two.
As for taxis during peak time, rich people can now pay more for priority pickups with surge pricing. That's not a plus for society, it's a plus for rich people.