The real cause of the housing crisis (i.e. not the communist conspiracy theories about greedy landlords or zoning laws or Blackrock) is migration both international and internal.
International migration is obvious, more people in the country means more housing is needed. The solution to this is mass deportations, not building massive pod towers everywhere.
Internal migration is caused by outsourcing entire industries which killed the economy of entire regions. The solution to this is legalizing mining and forestry (a lot of small towns were killed by environmentalists making their industries illegal), reshoring manufacturing and incentivizing rebuilding in rust belt towns (will require busting the union mafia), and remote work (which allows white collar workers to live anyone in the country (like their hometowns) instead of being crammed into a handful of megacities).