Induced demand is a term used in the context of congestion; any kind of congestion. If your site get faster/better you get more visitors, if car trip get faster

Induced demand is a term used in the context of congestion; any kind of congestion. If your site get faster/better you get more visitors, if car trip get faster/cheaper you get more car trips, if trains get cheaper/better you get more train trips, if your ISP upgrade to fiber you get more internet traffic. Induced demand is the idea that if doing X is a miserable experience due to too many people wanting to do X, then improving the experience will induce more people to want to do X so upgrading the infrastructure need to account for all the people that currently are giving up but start X-ing once it get marginally better. In a vicious cycle of congestion -> upgrades -> congestion again. The implication is that often rather than scaling X you are better off finding a different path that suffer less congestion, as is the case with car travel. Induced demand of non-scarce resource is just growth.