People want lots of things until they realize it'll take something away from cars. Paris won't be as bad as the US is but it's still there.

I see a lot of cities that measure bike lanes in total length, which misses the mark in two ways:

1. It often includes lanes that are shared with cars. These shouldn't count except on side streets. Basically anywhere where the speed limit is <25kmh; and

2. Focus needs to be given on contiguous cycling routes. It doesn't matter if you have 1000km of cycle routes if no section is longer than 2km and they're only connected by highways you have to share with cars.

Of course Amsterdam is the gold standard here and it shows how much you can do without necessarily taking up more space (eg the intersection design that puts cyclists in front of cars, which is much safer).

In a city like Paris having physically separate bike lanes will often mean taking away parking spaces or lanes of traffic. That's where the resistance will be.