At some point you reach critical mass, where the majority of the population uses the bicycle as at least one of their modes of transportation, after which improvements to bicycle infrastructure are more widely supported and thus more easily made - which then causes more people to use the bicycle, etc.
That’s what happened in the Netherlands a couple of decades ago, and the infrastructure now is wonderful and still getting better.
At some point you reach critical mass, where the majority of the population uses the bicycle as at least one of their modes of transportation, after which improvements to bicycle infrastructure are more widely supported and thus more easily made - which then causes more people to use the bicycle, etc.
That’s what happened in the Netherlands a couple of decades ago, and the infrastructure now is wonderful and still getting better.