There are so many people paying half of their salary to live in some tiny flat in London while their parents have a 5 bedroom house somewhere much nicer that is mostly unoccupied. Just because they feel they must be "independent" (even though some of these people are receiving parental subsidies anyway).
Why not just let the buy to let market shrink and bring some semblance of sanity back to house pricing. People who live with their parents will have much lower financial risk and thus can take jobs which focus on experience rather than salary and they can save money for entrepreneurial activity or to later on buy the houses which will be cheaper as a result.