I’m a bit confused. In NYC we recently completed the swap to Omny which supports any contactless payment - physical card, apple pay, google pay, etc. This is av

I’m a bit confused. In NYC we recently completed the swap to Omny which supports any contactless payment - physical card, apple pay, google pay, etc. This is available in all trains and buses. The only exception is when transferring to the airport’s air train which still required a metro card though this will be remedied in the near future. When I was in London this year I could do the same - tap in and tap out (with anything that supported tap to pay) since the cost depends on the distance. Is there not a similar system available in France to replace the physical tickets? Is the only option a special card you have to purchase ahead of time and then separately load money into? Surprising this is poorly planned from the same country that was so quick to adopt the chip in credit cards.