They may do something about Air BnB - though as a family we prefer these to hotels - as you don't get hotel suits in UK really but can see they make many tourist places housing situation worse.
The house problem is rising population and lack of supply going back decades.
The natural population is predicted to go into reverse as soon as next year more deaths than birth is expected but immigration likely lead to increase population for decades and at same time we need more workers to pay tax to fund aging population.
On top of that is under occupation - due to divorces aging population and lack of suitable and preferable housing to move to. But building more in area where demand is high is increasing difficult as services in those areas are already under strain. Increased density of housing - but poor build quality and people in UK preferring houses makes that hard.
Rent controls being their own issues and rental market has huge problems.
Labour are making noises about building more but so have previous governments and once you start to try you run into local opposition and need to also build up local services - which takes more money and actually getting the developers to build type of housing stock needed not what makes most money.
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Plus as PP have said it's not just a UK issue - Ireland, Australia, USA - various European countries also have high housing cost and housing problems.