The political cost within a democratic society is a reality and a real cost you have to contend with if you want to reshape how public roads are used. So, yes, the cost is high compared to switching cars.
Either way, the source is irrelevant to the fact that it is a real cost.
It's business owners here too. There are many studies showing that bike lanes create more customers than parking spaces, but the owners don't believe it and consistently act against their own interest.