Taxi companies don't like rail going to US airports. With JFK you have to take one train, then change, then another train, then you're at the equivalent of Paddington. Would be like having to change at Hayes+Harlington. Luton has this, but that's the odd one.
From Newark I think it's a bus to a train station, then a train to NY Penn.
The "default" way to get from Heathrow/Gatwick/Stansted to London is a train from the terminal to the centre, typically multiple options.
The default way in the US is taxi. Massively inefficient, but a lot of people make a lot of money from it. Why have a plane load of people on a single train costing $5k, when you can have 200 taxis costing $20k, generating 4 times the GDP.
From Newark I think it's a bus to a train station, then a train to NY Penn.
The "default" way to get from Heathrow/Gatwick/Stansted to London is a train from the terminal to the centre, typically multiple options.
The default way in the US is taxi. Massively inefficient, but a lot of people make a lot of money from it. Why have a plane load of people on a single train costing $5k, when you can have 200 taxis costing $20k, generating 4 times the GDP.