You can "just stop renting" and move somewhere else.
Housing demand is less elastic than, let's say, potato demand, but it's not "absolutely inelastic" as you have said.
In MBA101-bobos world this is true in theroy, in practice its not. (let me guess: You do not have children, yet, right?)
Thats always the biggest difference:
In theory, there is no difference between practive and theory - but in practice, there is ;-)
Good transit and road infrastructure also both make demand more elastic because the choice of where you can live without changing jobs expands.