We vote and so politicians listen to our desires. Falling house prices would be a boon for renters and first-time buyers (and probably for society at large), but their political clout is less than that of middle-aged, middle-class property owners.
Link baity article with no real "answer". Rents and house prices follow simple supply and demand over long term. Cities are either already saturated or don't allow new constructions limiting the supply however people never stop flocking to them year over year. Even the medium size cities see net inflow of 50K-100K people every year - which means you need that many more new housing units each year. So ultimately only a few % of people gets to live in city and everyone else are forced to suffer commute. This % keeps declining because population total keeps growing and so the rent keeps rising.
Rent control etc can distort the economics for a while but not over long run. They are just "pain killers" when what you need is real medicine. The real medicine is simply policies that diversifies the areas. For example, encourage businesses to move in surrounding towns by offering tax benefits, build solid transportation network, open new public schools, encourage more constructions outside popular area, build communities with attractive facilities, build venues for cultural and sports events outside of cities and so on.