Not really. Margin loans for shares are much riskier than property. Especially if they were purchasing a single stock, and in particular, an airline stock, as indicated above. Having debt secured against the value of the shares which can fluctuate daily leading to a host of issues that do not exist with property. Hit a downturn and you're forced to sell your stocks at a loss or funnel more cash to the lender. And they're also expensive. I am sorry, but there is a difference between the two. Borrowing to buy shares isn't good advice and not worth the risks for the general person.
Back on topic now..