Yeah, basically you would be looking for a government policy that would be making something cheaper, but also so wildly convenient that it ends up increasing usage faster than the savings.

Another example is the expansion of highways; if highways are free, expanding them to relieve traffic will generally cause car travel to go up as more trips become tolerable, and then the highway will be as congested as it was before. https://www.vox.com/2014/10/23/6994159/traffic-roads-induced...